Cold Weather CWLC CWOC ALIT Student Handout Winter 2008 2009

United States Army Alaska
Northern Warfare Training Center
Cold Weather (CWLC, CWOC & ALIT)

Student Handout
Winter 2008-2009
“Battle Cold and Conquer Mountains”

Edition 14 November 2008
Table of Contents
Subject Area Page

Lesson #
Characterisitcs of Cold Regions
699-8010 Analyze terrain in cold regions 1
699-8011 Analyze weather of cold weather regions 20
Cold Weather and Mountain Medical

Considerations
699-8013 Manage cold weather injuries 49
699-8014 Manage altitude illness 73
Manage common cold weather and mountain
699-8015 environmental injuries 86
Cold Weather Clothing and Equipment

699-8016 Wear cold weather clothing and equipment 97
Risk Management
699-8017 Manage risk during operations in cold regions 120
Planning Considerations for Over Snow Movement

699-8012 Plan for over snow movement 143
Snowshoeing
699-8019 Move over snow on snowshoes 164
Sled Hauling
Haul the scow sled (ahkio) using skis and/or
699-8022 snowshoes 172
Tent and Stove Drill

699-8025 Conduct tent and stove drill 178
H-45 Stove
699-8026 Use an H-45 stove 208
Improvised Shelters
699-8027 Utilize improvised shelters 224
Tactical Bivouac
699-8028 Conduct operation of patrol base in cold regions 235
Table of Contents
Subject Area Page

Lesson #
Effects of Cold on Miltary Equipment

699-8031 Maintain vehicles in cold weather 255
699-8032 Maintain weapons in cold weather 269
Maintain communications and computer equipment in
699-8033 cold weather 281
Skiing
699-8020 Move over snow on skis 289
Avalanche Hazards
699-8018 Move safely in avalanche terrain 318
Individual Camouflage
Camouflage self and equipment in a snow covered
699-8024 environment 365
Firing Techniques
Engage targets with assigned weapons in a snow
699-8030 covered environment 373
Fighting Positions
Construct a fighting position in a snow/ice covered
699-8029 environment 382
Skijoring
699-8023 Skijor 395
APPENDIX A Cold Weather and Mountain Equipment Information 399
CG/CofS Policy Letter #0-08: Cold Weather Physical

APPENDIX B Training Policy 403
CG/CofS Policy Letter #0-14: Fuel Fired Space Heater

APPENDIX C Safety 405
699-8010: Analyze terrain in cold regions
SECTION II. INTRODUCTION
Motivator (Slide 1) You must understand the significant impact that the terrain in cold regions can
have on military operations in winter months and the significant impact that this terrain can have on
your ability to maneuver throughout the year. Your ability to assess the terrain and make decisions
about routes and hazards can mean the difference between a successful operation and one in which
you never even make the objective.
Characteristics
of
Cold Regions
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Terminal Learning Objective (Slide 2)

ACTION Analyze terrain in cold regions
CONDITION In a field or classroom environment, given a map sheet(s) of the training area
STANDARD Soldier:
- Utilized OCOKA to conduct a thorough analysis of the training area.
- Identified potential hazards associated with the training area.
- Used this information to manage risk during training.
Analyze Terrain in Cold Regions

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Safety Requirements: For classroom training discuss emergency procedures in case of fire or natural
disaster.
Risk Assessment: Low for classroom instruction.
Environmental Considerations: None
Evaluation: You will be tested on your knowledge of cold regions during a one hour written examination
at the conclusion of the course (Refer to training schedule for date/time of exam). You must score a 70%
on the written exam. If you fail the written exam, you will be given a second exam after re-training has
been conducted. If you fail this second examination you will be dismissed from the course.
Instructional Lead-In (Slide 3) This block of instruction provides you with the tools to conduct terrain
analysis of cold regions.
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SECTION III. PRESENTATION
Learning Step/Activity 1 –Define the acronym OCOKA.
a. (Slide 4) As in all military operations, terrain analysis involves OCOKA. You can use the acronym
OCOKA to analyze terrain. This analysis allows you to identify potential movement routes, patrol base or
assembly area locations, possible enemy avenues of approach and any potential hazards in the area of
operations. You can use a map or aerial photographs to initially analyze the terrain and confirm this
during a reconnaissance of the area.
(1) Obstacles.
• Identify natural and man-made obstacles. Evaluate the terrain relative to the type of force that will
move over it.
• Code terrain as either NO-GO, SLOW-GO, or GO.
o NO-GO terrain is impractical for the type of force being considered to move through it. It
does not mean that you cannot move through it, but your speed of movement will be
reduced unless considerable effort is expended to enhance mobility.
o SLOW-GO terrain hinders ground movement to a lesser degree than NO-GO terrain Little
effort is needed to enhance mobility.
o GO terrain is fairly open terrain that presents no problem to ground movement.
(2) Cover and Concealment. Cover gives protection from enemy fire. Concealment prevents enemy
observation.
(3) Observation/Fields of Fire. Observation refers to what can be seen. Fields of Fire refers to what can
be hit.
(4) Key Terrain depends upon the mission. It is any terrain that when seized or controlled gives a
marked advantage to the force that seizes or controls it.
(5) Avenues of Approach are areas through which a unit can maneuver or conduct movement to reach
a specific objective.
b. Before you can utilize OCOKA to analyze terrain, there are some characteristics and hazards of cold
regions that you must be familiar with.
Terrain Analysis: OCOKA

• Obstacles
• Cover and Concealment
• Observation/Field of Fire
• Key Terrain
• Avenues of Approach

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Learning Step/Activity 2 – Define cold regions.
a. (Slide 5) About one quarter of the Earth’s land mass may be termed severely cold. This is
indicated by the area above line A in the Northern hemisphere and below line A in the Southern
Hemisphere. Mean annual air temperatures are below freezing, maximum snow depths exceed 60
cm and lakes and rivers are ice covered for more than 180 days each year. Another quarter of the
Earth is termed moderately cold (including most of the United States and Eurasia) where mean
temperatures during the coldest month are below freezing.
b. Many methods have been used to define the limits of cold weather areas. The description I just
provided is one used by research scientists at the Cold Regions Research and Environmental
Laboratories (CREEL). For military purposes, cold regions are defined as any region where
cold temperatures and snowfall have a significant effect on military operations for one month
or more each year.
Cold Regions of The World
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Learning Step/Activity 3 – Describe the terrain and weather characteristics of the arctic, sub-arctic
and temperate sub-regions.
a. (Slide 6) Cold regions are present in both the Northern and Southern Hemispheres. The Southern
Hemisphere includes Antarctica, Patagonia and the Andes. In the Northern Hemisphere, cold regions
are broken down into three sub-regions – temperate, sub-arctic and arctic. These sub-regions are
military simplifications of biomes (a classification system that is based on latitude and climate that is
commonly recognizable on a global scale), that include arctic, sub-arctic, and temperate cold biomes.
The Arctic Circle is an arbitrary line located at 66 º 33’ N latitude that defines the southernmost
portion of the arctic sub-region.
b. Mountains can be found in all three sub-regions and can significantly complicate operations in
cold regions. All mountains and mountainous regions that receive a predictable amount of snowfall
should be treated as a cold region.
Cold Regions of The World

Arctic
Sub-Arctic
Temperate
Mountainous
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c. (Slide 7) In winter, the arctic is a cold dry climate, with sparse snow cover that lasts up to nine
months each year. The arctic is characterized by vast treeless areas, few roads or urban areas, and
extensive bog areas, lakes and rivers. During the midwinter months, the sun never rises; in the
summer months there are 24 hours of daylight. Sustained high winds and blowing snow are common.
Winter temperature range is -19º to -26º F with a record low of -54º F. Summer temperature range is
44º-51º F with a record high of 79º F. Summers experience cold-wet conditions.
Arctic
Cold winds / little moisture
Dry climate
Extremely high winds not uncommon
Summer temperature range of 44-51ºF; record high of 79ºF
Winter temperature range of -19 - -26ºF; record low of -54ºF
Snow cover 9 months per year
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d. (Slide 8) A typical view of the Arctic region in late winter/early spring. Note the single lane road
and rolling terrain with no visible vegetation. Also note that the snow pack does not appear to very
deep.
Arctic
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e. (Slide 9) The sub-arctic is the area south of the Arctic Circle typically characterized by dense
boreal forests, limited road networks and urban areas and extensive bog area, lakes and river
networks. Winter temperature ranges are from -15º F to -19º F, with a record low of -81º F (Snag,
Yukon Territory). Low winter temperatures are affected by the lack of sunlight with only four hours of
sun on the shortest day. Snow cover exists for at least 6 months in the lowlands; surrounding
mountains can have perennial snow cover. Summer temperatures range from 66º-73º F with a record
high of 96º F. Strong winds are common.
Sub-arctic
Strong winds
Summer temperature range of 66-73ºF; record high of 96ºF
Winter temperature range of -15 - -19ºF; record low of -81ºF
Snow cover 6-8 months per year
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f. (Slide 10) This is an area just South of the Black Rapids Training Site. This photo is also taken in
late winter. Note the mountainous terrain in the background, the dense spruce forests and deeper
snow pack.
Sub-Arctic
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g. (Slide 11) The temperate sub-region varies greatly and includes maritime and continental zones,
heavily forested areas, mountain ranges, deserts and plains areas. The effects of cold on military
operations in this region are generally short term, but these effects can be catastrophic for unprepared
units.
Temperate
Temperature varies greatly- extreme hot to extreme

cold
Climate is determined by latitude, altitude, and
geographical features
Extremes can present major difficulties to units
prepared only for moderate climates
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h. (Slide 12) Mountains can be found in all three sub-regions and can significantly complicate
operations in cold regions. All mountains and mountainous regions that receive a predictable amount
of snowfall should be treated as a cold region. Mountains are obstacles to transportation and
communication. Delays to re-supply operations or casualty evacuation are common due to frequent
bad weather. Small unit operations are more effective. However they need to be more self-sufficient
due to the difficulty of re-supply, casualty evacuation etc.
Mountainous Terrain
Compounds the difficulties of
fighting in cold regions
Weather is difficult to predict
Presents obstacles to ground

and air operations
Re-supply and casualty

evacuation are often not
possible by air or vehicle
Best terrain for small, self-

supported units
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i. (Slide 13) The arctic and sub-arctic have unique terrain characteristics that can significantly impact
military operations.
Terrain Characteristics
Boreal Forests
Tundra
Permafrost
Muskeg
Glaciers and Ice Caps
Rivers
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j. (Slide 14) Thick boreal forests, also known as Taiga, are vast areas in which evergreen spruce
and firs are the dominant plant life; it is also the northernmost area where trees can exist. Boreal
forests exist in both the arctic and sub-arctic. The extent of these forests diminishes the further one
moves north. Also, the tree line (with respect to elevation) is generally very low and transitions to
treeless areas can occur at elevations as low as 2,000 feet. Treeless areas are generally characterized
as tundra.
Boreal Forests
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k. (Slide 15) Tundra is an area where tree growth is hindered due to low temperatures and a short
growing season. Tundra is the norm in the arctic. It covers much of the arctic region in lieu of forests.
In the sub-arctic it exists where the elevation increases. Tundra is made up of various grasses and
mosses. Vegetation often develops into clumps with standing pools of water between them –these are
known as tussocks and make mounted and dismounted movement extremely difficult during the
summer and during freeze thaw periods. The tundra has been known to swallow vehicles as they sink
into the swampy ground. Movement is easier in the winter when the ground is frozen. Even with the
frozen ground of winter, vehicular movement is generally restricted to roads; movement on tundra can
quickly turn into a vehicle recovery operation. Drainage in these areas is typically poor due to the
permanently frozen ground that exists under the tundra – this is known as permafrost.
Tundra
Common in Arctic
Normally covered in tussocks
Difficult to move through in summer
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l. (Slide 16)
Tundra
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m. (Slide 17)
Tundra
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n. (Slide 18) Permafrost is permanently frozen ground that occurs when the ground temperature is
32°F or colder for 2 or more years. It is continuous in the Arctic, discontinuous in the sub-arctic, and
non-existent in the temperate region.
Permafrost
Permanently frozen ground
Ground temperature 32°F or less for 2 or more years
Continuous in the Arctic
Discontinuous in Subarctic and further south
Temperate regions free from permafrost
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o. (Slide 19) The thickness of permafrost varies from of few feet to over a thousand feet in depth.
Tundra prevents the thawing of permafrost. In areas where permafrost is present fighting positions will
have to be built above ground unless engineer support is available. The frozen ground prevents the
draining of water, contributing to the formation of muskeg.
Permafrost
(cont.)
Thickness varies from a few feet to over 1000 feet
Tundra keeps permafrost from thawing
Frozen ground prevents drainage
Fighting positions difficult to dig
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p. (Slide 20) Muskeg is a type of bog or wetland found in poorly drained areas underlain with
permafrost. Muskeg develops in areas with abundant rainfall and cool summers. Trapped by
underlying permafrost, water moves little or not at all. Acid from slowly rotting plants accumulates in
stagnant water and lowers soil pH. Black spruce (mainly in the sub-arctic), sphagnum moss, and
sedges thrive in this cold, wet, acidic soil. Sedges replace grasses which prefer warmer, dryer
conditions. The ground is usually soft and spongy or it can be a vast shallow swamp.
Again movement is difficult in the summer but gets easier in the winter when the ground is frozen.
These areas are often difficult to detect in early or late winter when the ground is only partially frozen,
and can become traps for vehicles that attempt to move through them.
Muskeg
Ground soft and spongy
Many standing pools of water
Very difficult to drive through in summer
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q. (Slide 21-23) Helicopter landed on what looked like a trail. It was a muskeg swamp used in winter
as a trail. Temperatures were below freezing, but as it was early winter the ground was not frozen
completely. The helicopter sunk into the muskeg and became stuck. Temperatures dropped overnight
and the helicopter froze into the muskeg. It took significant effort to free the stuck helicopter.
Muskeg
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A crane was used to hoist the helicopter out after chainsaws were used to cut the frozen muskeg and
ice around the helicopter.
Muskeg
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Stryker stuck in muskeg.
Muskeg
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r. (Slide 24) Glaciers are rivers of ice and snow that develop by the perennial accumulation of snow in
a valley or draw. The accumulated snow turns to ice through compression forces over time. The flow or
movement of glaciers is caused by gravity; they glide over a layer of melt-water between the underside
of the glacier and the underlying surface of the earth. Glaciers and polar icecaps cover 10% of the
earth’s surface. Alaska contains 2% of the total glaciers and glaciers are typically found in
mountainous regions of the sub-arctic and temperate areas. Glaciers are the highway into the
mountains, normally being easier and safer to negotiate than the surrounding ridges and peaks
however specialized training and equipment is required to safely negotiate glaciers.

Covers 10% of Earth’s surface
Alaska has 2% of the Earth’s glaciers
Often the easiest and safest means of travel in the
mountains, but specialized training is required for
negotiating
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s. (Slide 25) The Kahiltna and surrounding glaciers.
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t. (Slide 26) Rivers found in cold regions may aid movements or be major obstacles, depending upon
the time of year. Arctic/Sub-Arctic rivers are usually glacier-fed, with many braided channels and swift
currents. Glacier-fed rivers change course frequently, making river navigation difficult, and rendering
map data suspect. If shallow-draught boats are available, rivers may provide valuable lines of
communication in summer, and once firmly frozen, may offer high-speed routes for both mounted and
dismounted movement. During spring and early winter (break-up and freeze-up) however, rivers may
be impassable. Some rivers, especially in temperate areas, may not freeze solidly enough to allow for
winter movement.
Rivers
Majority of Arctic and Sub-Arctic rivers are
glacier fed
Good transportation routes after freeze up
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u. (Slide 27)
Rivers
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v. (Slide 28)
Rivers
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w. (Slide 29) Overflow ice occurs where a layer of ice ruptures and water underneath it flows up through
the surface. Two conditions must exist for overflow to occur. First temperatures must be below freezing.
As a water source freezes it does so from the top down. If the water under the layer of ice is under
pressure (for example where a spring continues to flow into the area), it can force its way through ice and
flow on top of it. This can occur throughout the winter, despite extremely cold temperatures. It can re-
freeze and rupture many times creating layer upon layer of ice. This can create a significant obstacle
along roadways. Snow can also mask the presence of overflow and create a significant hazard; You may
be moving along and suddenly find yourself immersed in water creating a a potentially life or limb
threatening condition.
Overflow Ice
• Can form at any water source when two conditions
are met:
• Temperatures are below freezing
• Water underneath a frozen layer of ice is under pressure
• Can build many layers creating obstacles along roads
• Can create conditions where water continues to flow

despite the temperature which creates a significant
obstacle and hazard to dismounted movement
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SECTION IV. SUMMARY
Your ability to analyze the terrain will help you to plan an effective mission and manage risk in the cold
weather environment. You now have a basic understanding of some of the hazards and terrain
peculiarities in cold regions; this knowledge will be important to you in later lessons as you learn to move,
shoot and communicate in the cold weather environment.
Check on Learning.
1. In the arctic and sub-arctic, what obstacles are typically present?
Muskeg, tundra, permafrost, glaciers swift, glacial fed rivers, deep snow pack.
2. What Cover and Concealment/Observation Fields of Fire possibilities exist in the arctic and sub-
arctic?
In the arctic, tundra offers little cover or concealment. Intravisibility lines (IV lines), and drainages
may be the only cover, concealment available. In the arctic and sub-arctic areas of boreal forest can
offer excellent concealment possibilities and average cover depending upon the types of trees
present.
Observation and field of fire is typically excellent in the arctic except where boreal forests exist.
Anywhere there are boreal forests, it may be necessary to gain high ground to achieve good
observation/fields of fire.
3. What is considered key terrain in the arctic and sub-arctic?
Because road networks are sparse these are often considered key terrain. Population centers are
also key terrain as they offer shelter which is essential to successful operations especially in winter
months.
4. What avenues of approach exist in the arctic and sub-arctic?
Roads are often sparse or non-existent in cold regions. Rivers can provide excellent travel routes in
summer months if units are equipped with shallow draught boats and excellent routes in winter after
ice conditions are safe for travel.

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699-8011: Analyze Weather of Cold Regions
Motivator (Slide 31) “Climate is a dynamic force (in the Russian expanse); the key to successful
military operations. He who recognizes and respects this force can overcome it; he who
disregards or underestimates it is threatened with failure or destruction. In 1941 the Wehrmacht
did not recognize this force and was not prepared to withstand its effects. Crisis upon crisis and
unnecessary suffering were the result. Only the ability of German soldiers to bear up under
misfortune prevented disaster. But the German Army never recovered from the first hard blow.”
Former German Army Group Commander, Eastern Front WWII
Weather

ACTION Analyze weather of cold regions
CONDITION In a field or classroom environment, given an altimeter
STANDARD Soldier:
- utilized various field techniques and procedures to predict weather.
- identified potential hazards associated with the weather.
- used this information to manage risk during training.
Analyze Weather of Cold Regions

20
Instructional Lead-In. You probably already know that weather can have a large impact on military
operations. You probably all have a story of a time when you were promised an air movement back from
a long field problem, but had to walk back instead because the of weather. Weather information can be
hard to come by in cold regions. Observatories may make generalized forecasts for large unpopulated
areas that may or may not be accurate. A call for moderate weather conditions in the forecast may not be
relevant to your particular area of operations and you can quickly find yourself overwhelmed by the local
conditions. Your ability to make observations and predict the weather can help you to prepare your
Soldiers for the worst.
disaster.
Risk Assessment: Low for classroom instruction.
Evaluation: You will be tested on your knowledge of weather during a one hour written examination at
the conclusion of the course (Refer to training schedule for date/time of exam). You must score a 70% on
the written exam. If you fail the written exam, you will be given a second exam after re-training has been
conducted. If you fail this second examination, you will be dismissed from the course.

21
Learning Step/Activity 1 – Describe how weather is created.
a. (Slide 33) Weather Basics: The earth is surrounded by an atmosphere that is divided into several
layers. The world’s weather systems are in the lower of these layers known as the troposphere. This
layer reaches as high as 40,000 feet. The forces that create the weather are:
(1) Sun
(2) Air Movement
(3) Earth’s Rotation
(4) Ocean’s and Land Masses
(5) Fronts
Forces that create weather:

Sun, air movement, earth’s rotation, oceans and
land masses, cold fronts and warm fronts
Weather depends upon:

Air temperature, humidity, air pressure, how air is
being moved and if the air is being lifted or not
You should observe:

Clouds, air pressure, wind direction/speed,
temperature and humidity to help predict weather
Some tools that you can use are thermometer,

barometer/altimeter and wind meter.

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b. The Sun (Slide 34) is the major force behind the weather. The sun provides the heat that creates
the temperature variations that are ultimately responsible for all weather. The sun does not heat the
earth evenly. At the equator it heats the earth’s surface with greater intensity than it does at the poles.
This uneven heating results in air movement.
The Sun
• is the major force behind the weather
• does not heat the earth evenly; at the equator it heats the earth’s
surface with greater intensity than it does at the poles
• uneven heating results in air movement; temperature variations

are ultimately responsible for all weather
c. Air Movement. (Slide 35) You are all familiar with wind. But you must also understand vertical
movement of air. As air is heated it becomes less dense (lighter) and rises. As air is cooled, it becomes
denser (heavier) and sinks. These temperature differences equate to air pressure differences. There
are some basic facts about air pressure that you should be familiar with:
(1) Air pressure is the weight of the atmosphere at any given place.
(2) The average air pressure at sea level is 29.92 inches of mercury (hg) or 1,013 milibars (mb).
(3) Air that is cooled is dense (heavier) air – therefore the air pressure is high. High pressure areas
have the following characteristics:
• The airflow is clockwise and out

• Otherwise known as an anticyclone
• Associated with clear skies
• Generally the winds will be mild
• Depicted as a blue H on weather maps
(4) Air that is heated is less dense and rises – therefore the air pressure is low. Low pressure areas
have the following characteristics:
• The airflow is counterclockwise and in

• Otherwise known as cyclone
• Associated with bad weather
• Depicted as a red L on weather maps
(5) Pressure differences cause air to move from a high pressure area to a low pressure area which
creates wind. Just think of the air compressor you use to inflate your tires – air under high pressure
moves into your tires that have a lower air pressure. Air from a high pressure area is basically trying to

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flow out and equalize its pressure with the surrounding air. Low pressure on the other hand, is building
up vertically by pulling air in from outside itself.
(6) As air moves from high pressure areas to low pressure areas it carries moisture with it. In the low
pressure areas, the air rises up. As this air rises up, it is cooled. As air cools, its capacity to hold water
is reduced. Clouds are formed, and precipitation often follows. The opposite effect happens at the
poles. Polar air sinks and as it does so it creates high pressure areas of very cold air. As it sinks it
actually warms. This warming evaporates any moisture present. This is the reason that the arctic
receives very little precipitation. This warming is a relative thing and does little to warm the overall
climate of the Arctic.
(7) The higher in altitude you go, the lower the air pressure will be.
Air Movement
• Air pressure is the weight of the atmosphere at any given
place.
• Air that is cooled, sinks and is dense (heavier) air – therefore

the air pressure is high.
• Air that is heated is less dense and rises – therefore the air
pressure is low.
• The higher in altitude you go, the lower the air pressure will
be.

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d. The Earth’s Rotation. (Slide 36) If the earth was stationary, air masses would move from the
poles to the equator and back to the poles as it was heated and cooled. But the earth rotates. The
rotation of the earth deflects the air masses influencing wind movement. Much of the world’s weather
depends upon a system of winds that blow in a set direction.
(1) In the Northern Hemisphere there are three prevailing winds:
• Polar Easterlies. These are winds from the polar region moving from the east. This is air that
has settled at the poles.
• Prevailing Westerlies. These winds originate from approximately 30 degrees north latitude
from the west. This is an area where prematurely cooled air, due to the earth’s rotation, has
settled to the surface.
• Northeast Trade Winds. These are winds that originate from approximately 30 degrees north
from the northeast.
(2) The jet stream is a long meandering current of high speed winds often exceeding 250 miles per
hour; it is located near the transition zone between the troposphere and the stratosphere known as the
tropopause. These winds blow generally from a westerly direction dipping down and picking up air
masses from the tropical regions and going north and bringing down air masses from the polar regions.
Earth’s Rotation
H
L L 60º N
H H 30º N
L L L L
H H 30º S
L L 60º S

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g. Fronts. (Slide 39) Fronts occur when two air masses of different moisture content and temperature
meet. One indicator that a front is approaching is the progression of the clouds.
Fronts
Warm Front: warm air mass moves into and over a slower or
stationary cold air mass; warm air is less dense and therefore
moves up and over the cold air mass
Cold Front: cold air mass overtakes a slower or stationary
warm air mass; cold air forces the warm air up
Occluded Front: Combination of warm front and cold front
characteristics; occurs frequently over land
Stationary Front : no significant air movement is occurring

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h. Clouds (Slide 40) are indicators of weather conditions. By reading cloud shapes and patterns, you
can forecast weather without any extra equipment. Any time air is cooled or lifted beyond its saturation
point (100 percent relative humidity), clouds are formed.
(1) Humidity is the amount of moisture in the air. All air holds water vapor even if it cannot be seen.
Air can hold only hold so much water vapor; however, the warmer the air, the more moisture it can
hold. When the air holds all that it can, the air is saturated or has 100 percent relative humidity.
(2) If air is cooled beyond its saturation point, the air will release its moisture in one form or another
(clouds, fog, rain, snow etc.). The temperature at which this happens is called the condensation or
dew point. The dew point varies depending upon the amount of water vapor contained in the air and
the temperature of the air. If the air contains a great deal of water, dew can occur at temperatures of
68º F, but if the air is dry and does not hold much moisture, dew may not form until the temperature
drops to 32 º F or even below freezing in which case you see frost.
The four ways that clouds are formed are:
(1) Convective Lifting. This effect happens due to the sun’s heat radiating off the earth’s surface
causing air current (thermals) to rise straight up and lift air to a point of saturation.
(2) Frontal Lifting. A front is formed when two air masses of different moisture content and
temperature collide. Since air masses will not mix, warmer air is forced aloft over the colder air mass.
From there it is cooled and then reaches its saturation point. Frontal lifting creates the majority of
precipitation.
(3) Cyclonic Lifting. An area of low pressure pulls air into its center from all over in a
counterclockwise direction. Once this air reaches the center of the low pressure, it has nowhere to go
but up. Air continues to lift until it reaches the saturation point.
Cloud Formation
Convective Lifting: Sun’s heat radiating off the earth’s
surface causing air currents (thermals) to rise straight up and
lift air to point of saturation.
Frontal Lifting: A front is formed when two air masses of

different moisture content and temperature collide. Since air
masses will not mix, the warmer air will lift until it reaches its
saturation point. Produces majority of precipitation.
Cyclonic Lifting: An area of low pressure pulls air into its

center from all over in a counterclockwise direction. Once air
reaches the center of low pressure, it has nowhere to go but
up. Air continues to lift until it reaches the saturation point.

27
(4) Orographic Lifting (Slide 41). This happens when an air mass is pushed up and over a mass
of higher ground such as a mountain. Air is cooled due to the adiabatic lapse rate until the air’s
saturation point is reached.
Cloud Formation (cont.)

Orographic Lifting: This happens when an air
mass is pushed up an over a mass of higher ground
such as a mountain. This is typical along coast
regions with mountains. As the air mass moves up
the mountain range, the moisture is released quickly
and typically produces heavy precipitation. This is
evident in the Cascade Range of the Pacific
Northwest.

28
Learning Step/Activity 2 – Explain the significance of different cloud types.
a. (Slide 42) Clouds can be described in many ways. They can be classified by height or
appearance, or even by the amount of area covered vertically or horizontally. Clouds are classified
into five categories: Low, mid and high level clouds; vertically developed clouds and less common
clouds.
Cloud Types
Low Level
Mid Level
High Level
Vertical-Development Clouds
Less Common Clouds

29
b. (Slide 43) Low level clouds (0-6,500 feet) are either cumulus or stratus. Low-level clouds are
composed mainly of water droplets since their bases lie below 6,500 feet. When temperatures are
cold enough, these clouds may also contain ice particles and snow. Low-level clouds may be
identified by their height above nearby surrounding relief of known elevation. Most precipitation
originates from low-level clods because rain or snow usually evaporates before reaching the ground
from higher clouds. Low-level clouds usually indicate impending precipitation, especially if the cloud is
more than 3,000 feet thick. Clouds that appear dark at their bases are more than 3,000 feet thick.
Low-Level Clouds: Either Cumulus or

Stratus; mostly composed of water; two of the
precipitating low level clouds are Nimbostratus
clouds and Stratocumulus clouds
c. (Slide 44) Cumulus clouds indicate fair weather. Resembles cotton balls.
Cumulus Clouds: Low level; fair weather

30
d. (Slide 45) Stratus clouds indicate fairly stable weather. Resembles lumpy sheets.
Stratus Clouds Low level: fair weather

light precipitation
e. (Slide 46) Nimbostratus clouds are dark low-level clouds accompanied by light to moderately
falling precipitation. The sun or moon is not visible through nimbostratus clouds, which distinguishes
them from mid-level altostratus clouds. Because of the fog and falling precipitation commonly found
beneath and around nimbostratus clouds, the cloud base is extremely diffuse and difficult to accurately
determine.
Nimbostratus Clouds: Low level

31
f. (Slide 47) Stratocumulus clouds generally appear as a low, lumpy layer of clouds that is
sometimes accompanied by weak precipitation. Stratocumulus vary in color from dark gray to light
gray and may appear as rounded masses with breaks of clear sky in between. Because the individual
elements of stratocumulus are larger than those of the mid level cloud, altocumulus, deciphering
between the two cloud types is easier. With your arm extended toward the sky, altocumulus cloud
elements are about the size of a thumbnail, while stratocumulus elements are about the size of a fist.
Stratocumulus Clouds: Low level

32
g. (Slide 48) Mid-level clouds (between 6,500 to 20,000 feet) have a prefix of alto. Middle clouds
appear less distinct than low clouds because of their height. Alto clouds with sharp edges are warmer
because they consist of water droplets. Cold clouds, composed mainly of ice crystals and usually
colder than – 30 degrees F, have distinct edges that fade gradually into the surrounding sky. Middle
clouds usually indicate fair weather, especially if they are rising over time. Lowering middle clouds
indicate potential storms, though usually hours away. There are two types of mid-level clouds,
altocumulus and altostratus clouds.
Mid-Level Clouds: Middle clouds generally

indicate fair weather, especially if they are rising
over time. These clouds have the prefix ‘alto’.
Deteriorating weather is indicated by lowering
middle clouds though these storms are usually
hours away.

33
h. (Slide 49) Altocumulus clouds can appear as parallel bands or rounded masses. Typically a
portion of an altocumulus cloud is shaded, a characteristic which makes them distinguishable from
high-level cirrocumulus. Altocumulus clouds usually form in advance of a cold front. The presence of
altocumulus clouds on a warm humid summer morning is commonly followed by a thunderstorm later
in the day. Altocumulus clouds that are scattered rather than even are often called fair weather
cumulus and suggest the arrival of high pressure and clear skies. Resembles a fish fillet.
Altocumulus Clouds: Mid level
i. (Slide 50) Altostratus clouds are often confused with the high level cirrostratus clouds. The one
distinguishing feature is that a halo is NOT observed around the sun or moon with altostratus. Also,
with altostratus the sun or moon is only vaguely visible and appears as if it were shining through
frosted glass. Resembles bed sheets.
Altostratus Clouds: Mid level

34
j. (Slide 51) High level clouds (more than 20,000 feet above the ground) are usually frozen clouds,
indicating air temperatures below -30 degrees Fahrenheit, with a fibrous structure and blurred outlines.
The sky is often covered with a thin veil of cirrus that partly obscures the sun or, at night produces a
ring of light around the moon. The arrival of cirrus and cirrostratus clouds indicates moisture aloft and
the approach of a traveling storm system. Precipitation is often 24-36 hours away. As the storm
approaches the cirrus thickens and lowers, becoming altostratus and eventually stratus. Temperatures
warm, humidity rises and winds become southerly or south easterly. The two types of high level
clouds are cirrus and cirrostratus.
High-Level Clouds: These clouds are in the

upper reaches of the troposphere and indicate
moisture aloft and that precipitation is 24-36
hours away. Cirrus and Cirrostratus are the
most common. The only indicators of these
clouds may be a halo or ring around the moon
or sun.

35
k. (Slide 52) Cirrus clouds are the most common of high-level clouds. Typically found at altitudes
greater than 20,000 feet, cirrus are composed of ice crystals that form when super-cooled water
droplets freeze. Cirrus clouds generally occur in fair weather and point in the direction of air
movement at their elevation. Cirrus can be observed in a variety of shapes and sizes. They can be
nearly straight, shaped like a comma, or seemingly all tangled together. Extensive cirrus clouds are
associated with an approaching warm front. Resembles Mare’s Tails.
Cirrus Clouds: High level
l. (Slide 53) Cirrostratus clouds are sheet like, high level clouds composed of ice crystals. They
are relatively transparent and can cover the entire sky and be up to several thousand feet thick. The
sun or moon can be seen through cirrostratus. Sometimes the only indication of cirrostratus clouds is
a halo around the sun or the moon. When seen around the sun, this halo is often referred to as a Sun
Dog. Cirrostratus clouds tend to thicken as a warm front approaches, signifying an increased
production of ice crystals. As a result, the halo gradually disappears and the sun or moon becomes
less visible. Precipitation is generally on the way in the next 24-36 hours when these are observed.
Cirrostratus Clouds: High level

36
m. (Slide 54) Clouds with vertical development can grow to heights in excess of 39,000 feet,
releasing incredible amounts of energy. The two types of clouds with vertical development are fair
weather cumulus and cumulonimbus.
(1) Fair weather cumulus clouds have the appearance of floating cotton balls and have a lifetime
of 5-40 minutes. Known for their flat bases and distinct outlines, fair weather cumulus exhibit only
slight vertical growth, with the cloud tops designating the limit of rising air. Given suitable conditions,
however, these clouds can later develop into towering cumulonimbus clouds associated with powerful
thunderstorms. Fair weather cumulus clouds are fueled by buoyant bubbles of air known as thermals
that rise up from the earth’s surface. As the air rises, the water vapor cools and condenses forming
water droplets. Young fair weather cumulus clouds have sharply defined edges and bases while the
edges of older clouds appear more ragged, an artifact of erosion. Evaporation along the cloud edges
cools the surrounding air, making it heavier and producing sinking motion outside the cloud. This
downward motion inhibits further convection and growth of additional thermals from down below,
which is why fair weather cumulus typically have expanses of clear sky between them. Without a
continued supply of rising air, the cloud begins to erode and disappears eventually.
(2) Cumulonimbus clouds are much larger and more vertically developed than fair weather
cumulus. They can exist as individual towers or form a line of towers called a squall line. Fueled by
vigorous convective updrafts, the tops of cumulonimbus clouds can reach 39,000 feet or higher.
Lower levels of cumulonimbus clouds consist mainly of water droplets, while at higher elevations,
where temperatures are well below freezing, ice crystals dominate the composition. Under favorable
conditions, harmless fair weather cumulus clouds can quickly develop into large cumulonimbus clouds
associated with powerful thunderstorms, known as super-cells. Super-cells are large thunderstorms
with deep rotating updrafts and can have a lifetime of several hours. Super-cells produce frequent
lightning, large hail, damaging winds and tornadoes. These storms tend to develop during the
afternoon and evening when the effects of heating from the sun are strongest.
Vertical Development Cloud

Formations
Fair Weather Cumulus: resemble floating
cotton balls with a short lifespan
Cumulonimbus: generally in the shape of

anvils. Produce the majority of thunderstorms.

37
n. (Slide 55) Thunderhead. Impending thunderstorms.
Cumulonimbus Clouds: Thunderhead
o. (Slide 56) Less Common Clouds:
(1) Orographic or lenticular clouds develop in response to the forced lifting of air by the earth’s
topography. Air passing over a mountain oscillates up and down as it moves downstream. Initially,
stable air encounters a mountain and is lifted upward and cools. If the air cools to its saturation point
during this process, the water vapor condenses and becomes visible as a cloud. Upon reaching the
mountain top, the air is heavier than the environment and will sink down the other side, warming as it
descends. Once the air returns to its original height, it has the same buoyancy as the surrounding air.
However, the air does not stop immediately because it still has momentum carrying it downward.
With continued descent, the air becomes warmer and ascends back to its original height. Lenticular
clouds are cloud caps that often form above pinnacles or peaks and usually indicate higher winds
aloft. Cloud caps with a flying saucer shape, indicate extremely high winds (over 40 knots).
Lenticular clouds should always be watched for changes; if they grow and descend, bad weather can
be expected.
(2) Contrails are clouds that are made by water vapor being inserted into the upper atmosphere by
the exhaust of jet engines. Contrails evaporate rapidly in fair weather. If it takes longer than two
hours for contrails to evaporate, then there is impending bad weather.

38
Less Common Cloud
Formations
Orographic or Lenticular Clouds: Look
similar to contact lenses. Indicate poor weather
in the near future.
Contrails: Exhaust from jets creates clouds in

the upper atmosphere; evaporate quickly in fair
weather; contrails that takes longer than 2 hours
to evaporate indicate impending bad weather
p. (Slide 57) Lenticular Clouds: High winds aloft; can indicate approaching storm if they lower and
grow over time.
Lenticular Clouds

39
q. (Slide 58) High winds aloft
Lenticular Clouds
Learning Step/Activity 3 - List the indicators of impending bad weather.
a. (Slide 59) You can make a number of general observations that can give you a sense of what the
weather will do. By combining your knowledge of winds, clouds and noting temperature changes, and
changes in air or barometric pressure you can determine the probability that weather will effect your
operation. Inclement weather is not an excuse to stop training or halt operations, but by making
predictions about the weather, you can take the necessary steps to mitigate the effects of the weather
on your mission.
b. The following are often indicators that the weather is deteriorating:
(1) Lenticular clouds, plumes of blowing snow off ridges and peaks indicate high winds and an
approaching, often fast moving storm system.
(2) Mares Tales (Cirrus Clouds) or a halo around the sun/moon indicate that a storm system is
approaching and is about 24-36 hours away.
(3) Lowering, thickening cloud layers.
(4) Thunderheads (cumulonimbus clouds)
(5) Falling barometer. If you have access to an altimeter it can be used to predict weather. If you
are in a stationary position, watch the altimeter for changes – if the altitude appears to increase and
you have not changed positions, the pressure is falling and may indicate an approaching storm (low
pressure) system. The opposite is also true. If you are in a position and the weather has been poor,
watch the altimeter. If the altitude decreases over time and you have not changed positions, a high
pressure system is approaching and the weather should improve.
(6) You may notice the temperature fall as a winter storm comes to a close. Colder temperatures
often precede clear weather. Conversely, a general warming trend often precedes a storm system.
(7) Sudden changes in wind direction or intensity may also be indicative of an approaching storm.
(8) Contrails that do not dissipate within 2 hours.

40
Learning Step/Activity 4 – Describe weather characteristics, hazards and phenomena that can effect
military operations.
a. (Slide 60) In temperate climates it is rare to have weather or terrain conditions that shut down
training or actual military operations. Planners simply figure out a work around and execute the
mission. In cold regions, there are hazards and phenomena that can regularly degrade operations to
a level that makes the meeting mission unrealistic and/or brings the mission to a level of risk that is
unacceptable.
Weather Hazards and

Phenomena
58 REV- 000407

41
b. (Slide 61) Extreme cold temperatures can be managed with appropriate training, clothing and
equipment. When strong winds are added to the equation, wind chill temperatures can easily freeze
flesh within minutes or seconds. Wind chill is the combined cooling effect of ambient temperature and
wind on exposed skin. It is possible to figure out current and projected wind chill temperatures using
this chart. This can be used as a tool to plan the clothing and precautions required to prevent cold
injuries. Simply cross reference the ambient air temperature with the current wind speed to find the
equivalent wind chill temperature.
Wind
WindChill Chart
Chill
AIR TEMPERATURE IN FAHRENHEIT
WIND SPEED 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
5 36 31 25 19 13 7 1 -5 -11 -16 -22 -28 -34 -40 -46 -52 -57 -63
10 34 27 21 15 9 3 -4 -10 -16 -22 -28 -35 -41 -47 -53 -59 -66 -72
15 32 25 19 13 6 0 -7 -13 -19 -26 -32 -39 -45 -51 -58 -64 -71 -77
20 30 24 17 11 4 -2 -9 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81
25 29 23 16 9 3 -4 -11 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -84
30 28 22 15 8 1 -5 -12 -19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87
35 28 21 14 7 0 -7 -14 -21 -27 -34 -41 -48 -55 -62 -69 -76 -82 -89
40 27 20 13 6 -1 -8 -15 -22 -29 -36 -43 -50 -57 -64 -71 -78 -84 -91
45 26 19 12 5 -2 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -86 -93
50 26 19 12 4 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 -88 -95
WIND SPEED BASED ON MEASURES AT 33 FEET HEIGHT. IF WIND SPEED MEASURED AT GROUND LEVEL, MULTIPLY
BY 1.5 TO OBTAIN WIND SPEED AT 33 FEET IN HEIGHT AND THEN UTILIZE CHART.
34 REV- 000407

42
c. (Slide 62) Ice fog occurs when three things are present: temperatures of -30°F or colder a heat or
vapor source, and still air conditions. The moisture from the heat source crystallizes in the air, forming
fog. Firing a weapon can create ice fog producing a lasting signature and making alternate firing
positions a necessity for both target acquisition and concealment. Stationary running vehicles can also
produce ice fog creating a signature around them noticeable for miles.
Ice Fog
Temperatures are -30º F or colder; heat or vapor source
present and still air conditions
Obscures vision and target recognition
Hinders movement
Leaves signature when weapons are fired or vehicles are

operated
Numerous supplementary positions are needed for

weapons
Can be used to conceal your movement

35 REV- 000407
d. (Slide 63) A blizzard indicates that the following conditions will exist for a period of 3 or more
hours: sustained winds or frequent gusts to 35 miles per hour or greater and considerable falling
and/or blowing snow, reducing visibility to ¼ mile or less. Ground blizzards involve winds moving
snow that is already on the ground. This hazard is common in the arctic and mountains and can last for
days.
Blizzard
High winds
Blowing snow
Reduced visibility
Usually lasts 24 hours or less
36 REV- 000407

43
e. (Slide 64) A whiteout is caused by sunlight being diffused through an unbroken cloud layer onto
an unbroken snow surface. The horizon effectively disappears and individuals experience a loss of
depth perception and an inability to distinguish irregularities in terrain. Whiteout is often referred to as
‘flat light’. Travel under whiteout conditions is difficult and dangerous and units should restrict or cease
movement until the condition clears.
Whiteout
Loss of Depth Perception
Units Should Stop and Wait Condition out
37 REV- 000407

44
f. (Slide 65) Normally as elevation increases, temperature decreases. In mountainous areas, the
general rule is for every 1,000 feet of elevation gained, the temperature decreases 3-5º F. When cold,
calm, clear conditions exist, temperature inversions are the exception to this rule. During a troop
movement or climb started in a valley, higher temperatures may often be encountered as altitude is
gained. This reversal of normal cooling with elevation is called temperature inversion. Temperature
inversions are caused when the mountain air is cooled by snow, ice and heat loss through thermal
radiation. The cooler air settles into valleys and low areas. The inversion continues until the sun warms
the surface of the earth or a moderate wind causes a mixing of the warm and cold air layers.
Temperature differences can be as much as 20 degrees higher on hills or mountainsides that are just a
few hundred feet from the valley floor.
Temperature Inversion
Cold air settles in low areas; warm
air settles on top of cold
Can be 20°F difference
Bivouac site selection
38 REV- 000407

45
g. (Slide 66) Looming is an optical illusion where objects appear closer and taller than they actually
are. This condition exists in cold still air and can make range estimation inaccurate.
Looming
Optical illusion that causes objects to appear
closer than they actually are; causes problems
with range estimation
Normally occurs in extreme cold or hot dry air
64 REV- 000407
h. (Slide 67) Chinook winds are warm dry winds that occur in the lee of high mountain ranges. In a few
short hours, these winds can produce complete thaws in cold regions that typically do not see a thaw until
the summer months. The conditions will mimic the spring break-up period typical of cold regions. Mud
and flooding on roads and trails may make them impassable and frozen rivers and lakes may partially
thaw, making them unreliable as transportation routes.
Chinook Winds
These are warm, dry winds that occur in the

lee of high mountain ranges. It is a fairly
common wintertime phenomena in the
mountainous west and in parts of Alaska.
These winds develop in well-defined areas
and can be quite strong.
40 REV- 000407

46
i. (Slide 68) The Aurora Borealis are caused by charged particles produced by the sun, deflected by
the Earth’s magnetic field and drawn towards the poles. This causes a light show in the sky, being
most visible on cold clear nights. They occur throughout the year. They have been reported as far
south as Mexico City. They disrupt AM communications but can enhance FM commo. In the southern
hemisphere they are known as Aurora Australis.
Aurora Borealis
Caused by Charged Particles Produced by the Sun
Occur All Year
Aurora Borealis Activity Can Adversely Effect AM and
satellite communications but may enhance FM
communications
In Southern Hemisphere Called Aurora Australis
41 REV- 000407
j. (Slide 69)
Aurora Borealis
42 REV- 000407

47
SECTION IV. SUMMARY
You now have a general understanding of some of the weather hazards and phenomena that affect
military operations in cold regions. During the remainder of this course, other lessons require you to use
this knowledge to manage risk in the cold weather environment.
Check on Learning.
1. You have been in a patrol base for the past 18 hours. You checked your position and set your
altimeter to 6500 feet when you arrived. Now your altimeter is reading 6650 feet, but you have not
moved. What happened?
The pressure is dropping, causing your altimeter to rise even though you have not moved. You
should expect the weather to deteriorate in the very near future.
2. Your unit began a movement on a snow covered ridgeline on an overcast day. After a short time,
the light goes flat and your point man has lost all sense of direction. What is going on and what
should you do?
Your point man is not lost, he is in a whiteout. If you can afford to, you should halt the unit and wait
until conditions improve. If you cannot wait, movement must be slow and methodical.

48
699-8013: Manage Cold Weather Injuries
Motivator (Slide 1) You must learn to survive in the cold weather environment before you can learn to
fight in it. Military history has proven this again and again. This Russian Soldier froze to death during the
Russo-Finnish war. The Russians invaded Finland with 26 motorized divisions that were unprepared for
cold weather operations. The cold weather and an undermanned but well prepared Finnish Army took
their toll. Through sheer numbers the Russians later prevailed, but they suffered an estimated one million
dead; one Russian Commander remarked “We have gained just enough ground to bury our dead”. You
must understand the effect that cold weather has on your body and make preparations to keep yourself
and those in your unit protected from the cold weather challenge.
Cold Weather Injuries

ACTION Manage cold weather injuries
CONDITION Given the ECWCS, other issued cold weather clothing items, and issued
cold weather sleep system with insulating pad, access to a warming
shelter, under field conditions where temperatures range from 40º F to –
60º F
STANDARD Soldier:
-Identified all of the signs and symptoms of each type of cold weather
injury.
-Selected and applied the recommended treatment for the specified cold
weather injury.
-Did not sustain a cold weather injury during the conduct of the course.
Manage cold weather injuries

49
disaster.
Risk Assessment: Low
Evaluation: You will be tested on your knowledge of cold weather and mountain medical considerations
during a one hour written examination at the conclusion of the course (Refer to training schedule for
date/time of exam). You must score a 70% on the written exam. If you fail the written exam, you will be
given a second exam after re-training has been conducted. If you fail this second examination, you will
be dismissed from the course. In addition, you must not sustain a cold weather injury during the conduct
of the course. If you sustain a cold weather injury you will be dismissed from the course.
Instructional Lead-In (Slide 3) This shows cold weather injuries that were reported to the Army
Medical Surveillance Activity (AMSA) from 1998 to 2003. Over 3400 Soldiers suffered cold weather
injuries during this period. Note that the statistics were gathered from 34 Army posts worldwide
which illustrates that no matter where you are stationed you may sustain a cold weather injury.
Cold Weather Injuries
Total - 3446 Soldiers (approximately 1 BCT)

50
Learning Step/Activity 1 – Define the risk factors that make you susceptible to cold weather
injuries.
a. (Slide 4) Cold stress is the combination of environmental, mission and individual risk factors. In
order to succeed in the cold weather environment, you must be able to manage cold stress.
Cold Stress
Environmental Risk Factors:
• Temperature, wind, rain/snow, immersion, altitude
Mission Risk Factors:
• Work intensity, duration of cold exposure and
availability of adequate shelter, clothing and food
Individual Risk Factors:
• Physical fitness, body composition, fatigue, race,
gender, health

51
Learning Step/Activity 2 – Describe how the body loses heat.
a. (Slide 5) Your body maintains core temperature by balancing heat gain from the environment and
metabolism with heat loss. When the two are equal, you lose very little heat. If the body is exposed to
cold stress, and heat loss occurs, the balance is disrupted and body temperature falls. There are five
components that relate to heat exchange between the body and the environment. These are
metabolic heat production, radiation, conduction, convection and evaporation (includes respiration).
Metabolic heat production is the normal mechanism for heat gain in the body and is related to the
activity level of an individual.
(1) Radiation is the normal loss of body heat to the surrounding air. This is direct energy emission
usually in the form of infrared radiation. Clothing manufacturers have tried to create clothing that re-
captures this lost heat without much success (eg. Space Blanket). There is very little you can do to
prevent this form of heat loss. Even with the best cold weather clothing, radiated heat will be
transferred to the clothing and then out to the surrounding atmosphere. This form of heat loss
generally does not become problematic until -20º F.
(2) Conduction and convection both involve the transfer of heat energy between two objects of
different temperatures that are in contact with one another. These forms of heat loss are the most
dangerous to you. Fortunately, you can use cold weather clothing and equipment to reduce the
effects of heat loss from conduction and convection. Conduction occurs as heat is transferred from a
warm object to a cold object. When you lay down on cold, bare ground, you lose heat to the ground.
Convective heat loss occurs as a surrounding colder medium (air or water) is heated by your skin.
This type of heat loss is generally negligible in temperate climates. In cold weather climates
however, convective heat loss is the major contributor to heat loss. Wind increases the effects of
convective cooling by maintaining the temperature difference between the body and the air. The
stronger the winds, the faster heat is stripped away from the body; the amount of heat extracted by
moving air increases as the square of the velocity. This effect is known as wind chill.
(3) Respiration is the loss of body heat (and water loss) as you breathe.
(4) Evaporative heat loss occurs as you sweat and the sweat converts from a liquid to a gas.
So how does your body cope with this heat loss/cold exposure?
How does the body lose heat?
Radiation - 60%
Convection - variable
Conduction - variable
Respiration - 6% - 10%
Evaporation - 12% - 15%

52
Learning Step/Activity 3 – Describe how your body responds to heat loss.
a. (Slide 6) This is how your body will respond to heat loss:
(1) SHELL/CORE EFFECT: As you begin to experience heat loss, your body will pull blood from
the extremities (shell) and into the core of the body (torso) in order to ensure that critical systems stay
at the proper temperature. You gain very little from the shell/core effect; you would get the same
benefit from putting on a light business suit. The negative side of the shell/core effect is that your
fingers, toes, facial features and other extremities begin to feel and are colder.
(2) COLD DIURESIS: Due to the shell-core effect, the kidneys sense an increase in blood volume
and some of this fluid volume is converted to urine. The increase in blood volume in the core also
disrupts your thirst mechanism. You will urinate more frequently, and you are less likely to drink
liquids making you more susceptible to dehydration and cold weather injuries.
(3) SHIVERING THERMOGENESIS: If the shell core effect does not counteract the cold stress
and/or you do not take voluntary steps to reduce the cold stress, you will begin to shiver. Heat
production (thermo genesis) from shivering can be up to six times your resting metabolic rate. Your
coordination can be significantly impacted by shivering that cannot be controlled.
How does the Body Respond to the

Heat Loss?
• Shell/Core Effect – body pulls blood from
extremities in an effort to keep the core warm.
• Cold Diuresis – result of the shell/core effect;
body rids itself of fluid (increased urination),
because the kidneys sense an increase of
volume in the core; thirst mechanism is also
disrupted
• Shivering – involuntary reaction of skeletal
muscles which produces heat

53
Learning Step/Activity 4 – Determine wind chill temperature.
a. (Slide 7) Wind chill is the combined cooling effect of wind and ambient temperature on your skin
(convective heat loss). Given the current ambient temperature of _____ and the current wind speed
of ____, what is the wind chill temperature.
Wind Chill Chart

WIND
SPEED 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
5 36 31 25 19 13 7 1 -5 -11 -16 -22 -28 -34 -40 -46 -52 -57 -63
10 34 27 21 15 9 3 -4 -10 -16 -22 -28 -35 -41 -47 -53 -59 -66 -72
15 32 25 19 13 6 0 -7 -13 -19 -26 -32 -39 -45 -51 -58 -64 -71 -77
20 30 24 17 11 4 -2 -9 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81
25 29 23 16 9 3 -4 -11 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -84
30 28 22 15 8 1 -5 -12 -19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87
35 28 21 14 7 0 -7 -14 -21 -27 -34 -41 -48 -55 -62 -69 -76 -82 -89
40 27 20 13 6 -1 -8 -15 -22 -29 -36 -43 -50 -57 -64 -71 -78 -84 -91
45 26 19 12 5 -2 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -86 -93
50 26 19 12 4 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 -88 -95
WCT (°F) = 35.74 + 0.6215T - 35.75(V0.16) + 0.4275T(V0.16)

Where T is temperature (°F) and V is wind speed (mph)

54
Learning Step/Activity 5 – Determine how long it will take for your flesh to freeze in the cold
weather environment.
a. (Slide 8) Given the current ambient temperature of _____ and the current wind speed of ____,
how long will it take your flesh to freeze? What danger level does this indicate?
Risk Of Frostbite
WIND SPEED 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
5 >2H >2H >2H >2H 31 22 17 14 12 11 9 8
10 >2H >2H >2H 28 19 15 12 10 9 7 7 6
15 >2H >2H 33 20 15 12 9 8 7 6 5 4
20 >2H >2H 23 16 12 9 8 8 6 5 4 4
25 >2H 42 19 13 10 8 7 6 5 4 4 3
30 >2H 28 16 12 9 7 6 5 4 4 3 3
35 >2H 23 14 10 8 6 5 4 4 3 3 2
40 >2H 20 13 9 7 6 5 4 3 3 2 2
45 >2H 18 12 8 7 5 4 4 3 3 2 2
50 >2H 16 11 8 6 5 4 3 3 2 2 2
GREEN-LITTLE DANGER (frostbite occurs in >2H in dry exposed

skin)
YELLOW - INCREASED DANGER (frostbite could occur in 45 minutes or less
in dry, exposed skin)
RED- GREAT DANGER ( frostbite could occur in 5 minutes or less in dry exposed skin)
Time to occurrence of frostbite in the most susceptible 5% of personnel.

Wet skin could significantly decrease the time for frostbite to occur

55
Learning Step/Activity 6 – Based on the current conditions, identify the precautions you
should take to prevent frostbite.
a. (Slide 9) This is guidance put forth by the US Army medical community. It recommends clothing
and exposure times for personnel operating in the three temperature ranges described on the last
slide and performing various types of work. If you are about to conduct a 10 K snowshoe movement
under the current conditions, what guidance would you utilize to prevent cold weather injuries?
Windchill Category
Little Increased Danger Great
Work Intensity Danger Danger
Increased surveillance by ECWCS or equivalent; Mittens Postpone non-essential
High small unit leaders; Black with liners; No facial training; Essential tasks only
Digging foxhole, running, gloves optional - mandatory camouflage; Exposed skin with <15 minute exposure;
marching with rucksack, below 0oF (-18oC); covered and kept dry; Rest in Work groups of no less than 2;
making or breaking bivouac warm, sheltered area; Vapor Cover all exposed skin,
barrier boots below 0oF (- Provide warming facilities
18oC) Provide warming
facilities
Increased surveillance; Cover Restrict Non-essential Cancel Outdoor Training

Low exposed flesh when possible; training; 30-40 minute work
Walking, marching without Mittens with liner and no facial cycles with frequent
rucksack, drill and ceremony camouflage below 10oF (- supervisory surveillance for
12oC); Full head cover below essential tasks. See above.
0oF (-18oC). Keep skin dry -
especially around nose and
mouth.
See above; Full head cover Postpone non-essential Cancel Outdoor Training
Sedentary and no facial camouflage training; 15-20 minute work
Sentry duty, eating, resting, below 10oF (-12oC); Cold- cycles for essential tasks;
sleeping, clerical work weather boots (VB) below 0oF Work groups of no less than 2
(-18oC); Shorten duty cycles; personnel; No exposed skin
Provide warming facilities
These guidelines are generalized for worldwide use. Commanders of units with extensive extreme cold-
weather training and specialized equipment may opt to use less conservative guidelines.
Learning Step/Activity 7 – Identify individual factors that make can make you more/less
susceptible to cold weather injuries.
a. (Slide 10) During most deployments, fatigue, under-nutrition and dehydration are ever present
problems for you. Fatigue, low blood sugar and dehydration all decrease the ability of your body to
deal with cold stress. You may be at further risk from a number of factors which may or may not be
within your control.
(1) Individual differences. Some individuals seem to be able to maintain body core temperatures
better than others. This is due to individual variability in body composition. Convective heat loss at
the skin is the main way the body loses heat in the cold weather environment. Individuals that are
short and stocky have a smaller skin surface area and are less prone to heat loss than taller, leaner
individuals. Body fat is also a better insulator than other body tissues; those with higher body fat
composition typically lose less heat to the environment.
(2) Fitness level does not directly affect the Soldier’s ability to handle the cold. However, Soldiers
with a high fitness level will be able to sustain work for longer periods of time before fatigue sets in.
These Soldiers also recover faster and are often less susceptible to injury or illness.
(3) Age has been shown to play a role in the susceptibility of Soldiers to cold weather injury.
Soldiers older than 45 years of age may suffer the effects of cold more readily than younger Soldiers.
Recent data has shown that cold injury rates are higher in young male Soldiers, from warm climates,
with less than eighteen months of service. This is probably due to the fact that these individuals are
typically exposed to cold, adverse conditions for longer periods of time.

56
(4) Gender and Race. Women sustain twice the number of peripheral cold injuries than men.
African American male and female Soldiers sustain two to four times the number of cold weather
injuries than their Caucasian counterparts. These gender and race differences are due to variability in
body composition.
(5) Prior cold weather injuries. Soldiers that have sustained cold weather injuries in the past are
at increased risk for similar injuries in the future. Unit SOP should dictate a marking system to ensure
that these individuals can be easily identified for monitoring.
(6) Diseases or injuries that interfere with circulation can increase the likelihood of cold weather
injury. Medical personnel should ensure that litter patients are packaged to prevent additional injuries
from the cold. For prolonged litter evacuations, a full body vapor barrier system may be appropriate to
prevent hypothermia; the Blizzard Protection System (BPS NSN: 6532-01-524-6932), or a field
expedient method may be utilized.
(7) Drugs and alcohol. Tobacco and/or alcohol use can be a contributing factor to cold weather
injuries. Tobacco is a vasoconstrictor and therefore can increase the likelihood of cold injuries to
extremities. Alcohol can create an artificial feeling of warmth, mask the symptoms of cold weather
injuries and suppress normal body reactions to the cold. Some prescription drugs may contain
substances that will increase the likelihood of cold injuries.
(8) The morale of Soldiers thrust into a cold weather environment can quickly decline. Basic
survival often becomes the only focus. Soldiers may withdraw and mission requirements can take a
backseat to individual needs. Conversely, meeting mission requirements can quickly override basic
Soldier needs. While it is often possible to tough it out in temperate climates, in the cold
weather environment this mentality will lead to cold injuries and combat ineffective Soldiers.
(9) Experiential based training for Soldiers and leaders will go a long way towards reducing the
physiological and psychological difficulties associated with the cold weather. Practical experience in
the cold weather environment is invaluable to ensuring the success of a unit conducting operations in
cold regions.
Individual Factors
Fatigue Gender and Race
Nutrition Prior cold weather injuries
Water intake Diseases or injuries
Individual differences Drugs/Tobacco/Alcohol
Fitness Psycho-Social Factor
Age Discipline, Training, Experience

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Learning Step/Activity 8 – Define food and water requirements for cold weather and mountain
operations.
a. (Slide 11) In a cold weather environment, adequate food and water intake become an important
factor in maintaining your health and performance. This factor is often one of the most difficult to
achieve because of mission requirements.
b. You will require an 10-40% caloric increase in the cold weather environment. On average you will
require 4,500 calories per day.
c. Rations include the Meal Ready to Eat (MRE), Meal, Cold Weather (MCW) and the Long Range
Patrol (LRP). Three to four MREs per day (1300 calories each), or three MCWs (4500 calories total)
or three LRPs (1573 calories each), must be eaten to obtain necessary calories. Mission
requirements may make adequate caloric intake difficult to achieve. This is especially true when the
rations must be re-hydrated with warm or boiling water, a luxury that is often unavailable to you.
d. You require 3.5-5 quarts of water per day to maintain the proper level of hydration. You should
not eat snow or ice. The proper amount of water cannot be obtained with this method and you will
lose additional heat as your body must heat the snow/ice to body temperature in order to melt and
absorb it.
e. Water procurement in the cold weather environment can be a difficult proposition. You may find
yourself reducing water intake to conserve limited water supplies or to avoid the need to urinate in
uncomfortable conditions. Don’t do it. Cold, dry air adds to increased water loss by respiration.
Additionally, the shell-core effect disrupts the thirst mechanism. Dehydration is the eventual result.
Drink before you are thirsty. Techniques for water procurement will be trained later.
f. You should monitor your urine output. Your urine should be light to straw colored. If your urine is
dark, orange colored urine you are dehydrated.
e. For units that will operate away from a support base, small, commercially available, multi-fuel
stoves can be utilized to melt snow for drinking water and to re-hydrate rations. A minimum of two of
these stoves per squad is appropriate. Water should be brought to a rolling boil to ensure that
waterborne pathogens are destroyed. To conserve fuel, snow/ice may be melted and then treated
with iodine or other water purification means. Refer to FM 21-10 Field Hygiene and Sanitation for
additional guidance on water purification methods.
Food and Water Requirements
Calories – 4500-6,000 calories

per day
3.5-5 quarts of water per day

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Learning Step/Activity 9 – Conduct personal hygiene in the cold weather environment.
a. (Slide 12) Personal hygiene and field sanitation are often neglected in the cold environment. Food
and water needs often take precedence over personal hygiene. Because of the extremes in
temperatures and lack of bathing and sanitary facilities, keeping the body clean in cold weather is not
an easy proposition. FM 4-25.12, Unit Field Sanitation Team provides guidance on personal hygiene
and field sanitation.
(1) Additional considerations for personal hygiene in cold regions include:
• You should wash your entire body weekly (at a minimum). If bathing facilities are not
available, you can wash with two canteen cups of water, using half for soap and washing
and half for rinsing. You should clean your feet, crotch and armpits daily.
• Beards should be shaved. Hair should be combed daily and not allowed to grow too long.
A beard and longer hair adds little insulation and soils clothing with natural hair oils. In
winter a beard or a mustache is a nuisance since it serves as a base for the build-up of
ice from moisture in the breath and will mask the presence of frostbite. You should shave
daily when possible. Because shaving with a blade and soap removes protective face
oils, you should shave several hours before exposure to the elements to reduce the
danger of frostbite. Shaving with an electric razor will not remove the protective oils.
• Change socks once per day at a minimum and wash your feet daily. If this is not
possible, remove your boots and socks and dry and massage your feet.
• Teeth should be cleaned daily.
(2) Field sanitation in cold regions is based upon the same principles utilized in temperate
climates. Considerations include garbage disposal and human waste disposal.
• Garbage can be burned, packed-out or buried. For the small unit, the preferred method is
to keep trash generated from rations and other sources with the individual. Periodically
as your unit is re-supplied, this garbage is collected and disposed of in a land-fill or by
incineration in a rear area. For temporary living areas of more than one week or in rear
areas, garbage can be burned in open incinerators. Reference FM 4-25.12 for
techniques. Burial is the least preferred method because of the impact to the
environment, and the fact that it will be nearly impossible to dig pits in frozen ground.
• Chemical latrines are used in the field when federal, state or local laws prohibit the use of
other field latrines. For most training exercises this is the preferred method and has
become the standard. In cold regions it will be difficult to maintain chemical latrines and
other options may need to be explored. For units on the move, individual waste collection
bags can be utilized. Field latrines should be located downwind from bivouac areas and
should be located at least 100 meters from any food service areas or water/snow
collection points. For bivouacs of less than one week, the cross tree type latrine should
be constructed. A ration box lined with a double trash bag or a commercially available
pail and bag set-up can be utilized to collect solid waste. A windbreak of boughs, tarps,
ponchos or snow-wall should be included to protect the latrine from the wind and to
provide a measure of privacy. The latrine area should be clearly marked. Prior to striking
camp, the human waste is collected for disposal in a land-fill or the waste is burned. A
urinal, designated for each shelter, should be located within 4-5 meters of the shelter.
For living areas that will be occupied for longer than one week, the burn out method for
solid waste is appropriate in cold regions. If human waste will be back hauled, it must be
marked “Human Waste”; it must not be transported with Class I.

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Personal Hygiene
Washing/Shaving
Oral Hygiene
Water Sources
Food Sources
Nicotine and Alcohol
Latrines
Clothing
Sleeping Bags
Learning Step/Activity 10 – Identify, treat and prevent dehydration.
a. (Slide 13) In a cold weather environment, you may notice a marked increase in urine output (due
to shell/core and cold diuresis). You may not feel thirsty (also due to cold diuresis). Overdressing for
the activity level (leading to excessive perspiration) in the cold weather environment is another
common contributor to dehydration.
b. Dehydration can significantly increase susceptibility to cold weather injuries.
Dehydration
What is it? Excessive loss of Symptoms: Headache,
body fluids. In a cold Dizziness, Rapid
environment, results from the heartbeat, Painful urination
shell/core effect and cold Constipation, Lack of appetite,
diuresis or overdressing.
Darkening of urine, Fatigue
Prevention: Drink 3.5-5 quarts Treatment: Replace lost water.

of water per day. A way to Liquids should be replenished
determine if fluid intake is slowly, not in large quantities. In
adequate is to monitor the color extreme cases medical
of urine – light to straw colored treatment and IV fluid
is good; dark brown is trouble. replacement may be necessary.

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Learning Step/Activity 11 – Identify, treat and prevent hypothermia.
a. (Slide 14) Hypothermia occurs when your core body temperature falls below 95º F. Hypothermia is
characterized as mild, moderate or severe, based upon core body temperature. Mild hypothermia occurs
when the core body temperature is between 90 and 95º F. Moderate hypothermia occurs at core body
temperatures of 80-89º F. Severe hypothermia exists when the core body temperature falls below 80º F.
Rectal temperature measurement is the only way to determine an accurate core body temperature. As it
is unlikely that this method will be used in the field, obvious signs and symptoms can be used to make a
diagnosis. All levels of hypothermia are potentially life threatening medical emergencies and
require immediate care in a medical facility.
(1) Warning signs. As core body temperature begins to fall, shivering will be the most noticeable
symptom. Shivering alone does not indicate hypothermia, but it does indicate that the body is having a
problem with the cold stress. Steps must be taken now to prevent hypothermia from setting in. These
steps include:
• Change out wet clothing for dry, insulated clothing.
• Conduct physical exercise.
• Hydrate with warm liquids.
• Add heat. Get into shelter, get into sleeping bag, wrap in blankets etc.
(2) Mild hypothermia symptoms include confusion, sleepiness, slurred speech, shallow breathing,
weak pulse, change in behavior or appearance, intense shivering, stiffness in the arms or legs, poor
control over body movements, slow reactions and/or abnormal heart rhythms (usually at the lower end of
the 90-95º F temperature scale).
(3) Treatment of mild hypothermia includes the above steps. In all circumstances, the individual must
be evacuated to a medical facility for treatment. Medical personnel should monitor the heart; if abnormal
heart rhythms are detected the patient should be not be allowed to exercise or assist in the evacuation.
Instead prepare the patient for litter evacuation to a medical facility.
(4) Moderate and severe hypothermia symptoms include dilated pupils, lack of shivering, low blood
pressure, unconsciousness, and absent or abnormal heart rhythms. As temperature continues to fall it
may be difficult or impossible to detect signs of life. Victims of hypothermia have been revived with core
temperatures as low as 60º F; hence the adage in the medical community: “A person is not dead until
they are warm and dead.”
(5) Treatment of moderate or severe hypothermia requires immediate hospitalization. There is a
high risk for heart failure. The circumstances of evacuation may increase this risk. The casualty should be
carefully prepared for litter evacuation (gently placed in a sleeping bag on a sleeping pad or equivalent,
then into litter). Rescuers should ensure that the casualty remains quiet and supine, that they do not jar or
move the patient suddenly and that the casualty does not assist in the evacuation.
(6) Prevention. Prevention of hypothermia includes:
• Proper use of cold weather clothing and equipment.
• Proper hydration, adequate rest cycles and hot meals.
• Providing warming shelters. Warming shelters can mean the difference between success and
failure in cold regions. You should anticipate the need for warming shelters for your Soldiers;
warming shelters give your Soldiers the chance to eat, drink, rest, conduct personal hygiene
and dry and maintain clothing and equipment.

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Hypothermia
What is it? Excessive heat loss Symptoms: Mild cases:
from exposure to a low ambient uncontrollable shivering, body
temperature, wetness, high temperature of 90-95º F and
humidity and wind. altered mental state (irrational
thought patterns); false sense of
warmth; personality changes
In moderate to severe cases:
lack of shivering, body
temperature below 90º F and a
severely altered mental state
Prevention: proper use of cold Treatment: In mild cases,
weather clothing and equipment; reduce the cold challenge and
anticipate the need for warming add heat (change to dry clothing,
shelters, change of clothing etc.; get into warming shelter,
adequate hydration and nutrition sleeping bag etc.); have the
individual exercise; provide food
and warm liquids. In severe
cases you must evacuate the
individual to definitive care.

62
Learning Step/Activity 12 – Identify, treat and prevent chilblain.
a. (Slide 15) Chilblain (also known as pernio or kibe) is a non-freezing cold injury typically occurring
after 1-5 hours in cold-wet conditions, at temperatures below 50º F. Small lesions appear on the skin
usually on the tops of the fingers. Ears, face, and exposed shins may also be involved. The lesions
are swollen, tender, itchy and painful. Upon re-warming, the skin becomes inflamed, red and hot to
the touch and swollen with an itching or burning sensation that may continue for several hours after
exposure. Eventually all symptoms subside. There are no lasting effects from chilblain.
(1) Treatment. Move individual to a warming shelter.
(2) Prevention. Proper wear of issued clothing along with adequate hydration and nutrition should
prevent chilblain.
Chilblain
What is it? Condition resulting Symptoms: Swollen red tissue
from excessive exposure to cold (in light skinned individuals) or
temperature, marked by darkening of the skin (in darker
inflammatory swelling of hands skin types).
and feet accompanied by severe This injury DOES NOT involve
itching and burning sensations, freezing of tissue.
and sometimes ulceration;
usually affects individuals with a
history of cold limbs in summer
as well as in winter.
Prevention: Proper wear of Treatment: Warm affected area
clothing; proper hydration and with direct body heat; do not
nutrition massage or rub affected area,
do not wet the area or rub it with
snow or ice; do not expose
affected area to open fire, stove
or any other intense direct heat
source
Learning Step/Activity 13 – Identify, treat and prevent frostbite.
a. (Slide 16) Frostbite occurs when you freeze your body tissue. The ambient air temperature must
be below 32º F for this injury to occur. If the ambient temperature is above 32º F, but is below 32º
F with wind chill, frostbite cannot occur. Frostbite generally occurs in exposed skin or extremities
such as the nose, ears, cheeks, hands and feet. Contact frostbite can occur when bare skin is cooled
quickly from contact with an extremely cold object. Frostbite can also occur instantaneously when
skin comes in contact with super-cooled liquids that do not freeze at 32º F, such as gasoline,
petroleum products, antifreeze etc. There are four degrees of frostbite and each is defined by the
level of tissue involvement. A diagnosis by medical doctor is required to determine the degree of
frostbite. For field diagnosis and treatment, frostbite can be classified as superficial or deep.
(1) Superficial frostbite. The first sign of frostbite is numbness. As skin cools, the individual will
feel an uncomfortable sensation of cold, which often includes tingling, burning, aching, sharp pain
and decreased sensation. These symptoms are replaced by numbness as the skin continues to cool
and then freezes. Soldiers often note that the affected area feels “wooden”. The skin initially turns
red. Later it becomes pale gray or waxy white. In dark skinned individuals, the skin often remains red.
The affected skin moves freely over pliable underlying layers.
(2) Deep frostbite. In deep frostbite, the skin is cold and firm to the touch. The skin will not move
over underlying layers. At a minimum, the affected area includes the upper layers of skin, and can
include all tissues down to and including the bone.

63
(3) Treatment. All frostbite cases must be evaluated in a medical facility. Treatment in the field
depends upon the treatment of other injuries, the possibility of hypothermia, the possibility of re-
freezing and the ease of evacuation. In most cases, during field training, you will have access to a
warming shelter.
• For superficial frostbite, the affected area can be re-warmed at room temperature or with
skin to skin contact. Techniques include covering cheeks or nose with warm hands,
placing uncovered fingers under opposite armpits, and placing bare feet against the belly
of a companion.
• For deep frostbite, if the patient can be moved to a warm shelter and the patient will be
kept warm for the duration of the evacuation to a hospital, the injury can be re-warmed
using the same techniques described above or using the warm water bath technique
described below. If there is the possibility that the injury will re-freeze during evacuation,
the decision should be made to keep the injury frozen.
(4) Some additional rules of thumb should be followed for field treatment of frostbite:
• Once a tissue has thawed it must never re-freeze. Thawing and then re-freezing the
injury will cause additional damage. If there is a chance that the tissue will thaw and
then re-freeze (for example, during evacuation), the difficult decision should be
made NOT to thaw the injury.
• Do not rub, massage or bend the affected area. Do not rub the affected area with snow
or ice and do not use cold water baths.
• The individual may be suffering from hypothermia or other potentially life-threatening
injuries; these must be considered and treated first.
• Thawed injuries must be insulated and protected from re-freezing during evacuation.
• If transportation is available, avoid walking on frozen feet. If the casualty must walk, it will
be better to keep the feet frozen during evacuation.
• Do not use excessive heat sources such as engine exhaust, open flames, stove tops,
heat packs or steam to thaw an injury.
• Do not use tobacco products as it reduces the flow of blood to extremities.
• Re-warming of deep frostbite injuries may produce the appearance of blisters known as
blebs. These should be left intact. If a bleb ruptures, it should be treated with a topical
antibiotic and covered with a sterile bandage.
• If the decision is made to re-warm the frostbite injury, a warm water bath in the range of
98 – 104º F (37-40º C) needs to be prepared. A container must be available that is large
enough to accommodate the frostbitten tissue without the tissue coming in contact with
the sides or bottom of the container. Hot water should never be used as it could cause
additional tissue damage. A thermometer that reads in the range of 98 – 104º F (37-40º
C) must be used. The water should be gently circulated around the affected tissue.
(5) Prevention. Hypothermia prevention methods also apply to frostbite. Prevention of frostbite
also includes:
• Always use contact gloves to handle equipment; never allow bare hands to come in
contact with equipment. Always use approved gloves to handle fuel and POL products.
• Any interference with the circulation of blood increases the risk of frostbite. Avoid tight
fitting clothing and boots. Proper sizing of clothing and boots is a critical function that
must be taken care of at issue facilities.
• Avoid tobacco products.
• Cover all exposed skin when the wind chill danger is high.
• Soldiers may not even be aware that they are developing frostbite, especially on the face.
Buddy teams should watch each other closely for signs and symptoms of frostbite and
take action if frostbite is noticed.

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Frostbite
What is it? Freezing of body tissue. Symptoms: Superficial frostbite –
The ambient temperature MUST be waxy, white or gray skin (pink or red
below 32º F in order for frostbite to in dark skinned individuals) pliable
occur. underlying layers; Deep frostbite -
Superficial – only the outer layer of the tissue is white or bluish and firm
skin is affected to the touch and will not move over
Deep – more tissue involved; can be underlying layers.
down to and include bone
Prevention: Proper wear of Treatment: Superficial - Field
clothing; use contact gloves to treatment is to warm affected area
handle equipment; use approved with direct body heat or use water at
gloves to handle POL products; temp of approx 98-104º F; once
keep face and ears covered and thawed, do not allow tissue to re-
dry; avoid tight, restrictive clothing; freeze; Deep – Field treatment is the
adequate hydration and nutrition; same, IF YOU ARE SURE THAT
avoid alcohol and tobacco products THE INJURY WILL NOT
REFREEZE. NEVER moisten or rub
with snow/ice; do not expose to
intense heat source
b. (Slide 17) Superficial frostbite – Notice the white waxy appearance on the finger tips.
19

65
c. (Slide 18) Another view of the same individual with superficial frostbite.
20
d. (Slide 19) A bleb or bleb blister – signs of deep frostbite. The bleb must never be popped. It
actually aids the healing process.
21

66
e. (Slide 20) Superficial frostbite – In darker skinned individuals the skin will be red and swollen.
f. (Slide 21) Deep frostbite

67
g. (Slide 22) Deep frostbite 6-8 weeks after the injury occurred – note that the black tissue is dead –
this individual will lose a large portion of both feet
h. (Slide 23) Deep frostbite from fuel spilled on the hand – picture also taken a number of weeks
after the injury occurred.

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Learning Step/Activity 14– Identify, treat and prevent immersion foot.
a. (Slide 24) Immersion syndrome is a non-freezing cold injury sustained by tissues exposed to cold-
wet conditions (usually between 32 and 60º F) for prolonged periods of time (about 4-5 days
minimum). It can occur in any tissue, but is most common in the foot. In extreme cold weather
environments it is seen in Soldiers that wear Vapor Barrier Boots for long periods of time with wet
socks. It initially appears swollen and red with a feeling of numbness. The tissue may become pale in
color in more serious injuries. It is accompanied by aches, increased pain sensitivity and infections.
(1) Treatment includes:
• Prevent further exposure.
• Remove wet or constrictive clothing.
• Wash and dry extremities gently.
• Elevate limbs and cover with layers of loose, warm, dry clothing.
• Evacuate to a medical facility.
• Do not pop blisters, apply lotions, massage, expose to extreme heat, or permit Soldiers
to walk on their feet.
(2) Prevention includes:
• Keep feet warm and dry; change wet socks as soon as possible.
• As mission permits, remove boots and allow feet to dry out for 2-3 hours minimum per
day.
• The inside of vapor barrier boots should be wiped dry at least once per day, or more
often as feet sweat; dry leather boots by stuffing with paper towels.
Immersion Foot
What is it? Prolonged exposure Symptoms: Cold, numb feet;
to cold wet conditions. Inactivity, may progress to hot with
damp socks and boots speed shooting pains; swelling,
onset and severity. redness and bleeding in severe
cases.
Prevention: Keep feet warm, Treatment: Re-warm and dry

clean and dry with frequent sock feet by exposing to warm air; do
changes; wet socks should be not allow victim to walk on injury;
dried out ASAP to allow them to do not rub, moisten or expose
be re-used; wipe VB boots out area to extreme heat; evacuate
once per day (minimum); dry
boots overnight by stuffing with
paper towels

69
b. (Slide 25) This photo depicts a Soldier that spent too long in a pair of VB boots without a sock
change. In an extreme cold environment like Alaska, vapor barrier boots often create cold, above
freezing, wet conditions that lead to immersion foot. This can be reduced by wiping out the vapor
barrier boots periodically, changing socks frequently and allowing feet to air dry during rest cycles.
c. (Slide 26) Note the cracking and drying of the skin after the foot has dried.

70
d. (Slide 27) Another look at immersion foot.
e. (Slide 28) A severe case prior to skin peeling and sloughing off.

71
f. (Slide 29) Another look at a severe case. Skin is dried out and has begun to slough off.
SECTION IV. SUMMARY
You must be able to prevent cold injuries before they happen. A Soldier that receives a cold weather
injury is put on a 30 day profile. This means a minimum of 30 days that the Soldier cannot participate in
outdoor training.
Check on Learning.
1. For any suspected cold weather injury you should:

a. Have the individual complaining drive on and tough it out.
b. Have medics look at the individual when you get around to it.
c. Evaluate the individual, make a diagnosis and decide what you should do next.
c. Stop what you are doing and focus on treating that individual immediately.
2. What is the treatment for superficial frostbite?

Use skin to skin contact to warm the effected area or immerse in a warm water bath that is between
98-104º F for one half hour. Wrap the injury loosely with a sterile dressing, do not allow the
individual to use the affected area under any circumstance and do not allow the injury to refreeze.
Medical personnel should make the decision concerning evacuation. Do not expose to intense
direct heat source or rub with snow or ice.

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699-8014: Manage altitude illness
Motivator (Slide 31) Operations in Afghanistan have routinely taken place at altitudes above 10,000
feet. In addition to the complications presented by the enemy and difficult mountain terrain and
weather, the lack of available oxygen at altitudes above 8,000 feet has created problems for Soldiers.
At best, operating above 8,000 feet will reduce your physical and mental performance; at worst it can
kill you.
33

ACTION Manage altitude illness
CONDITION At altitudes of 8,000 feet or higher
STANDARD Soldier:
-Identified all of the signs and symptoms of altitude sickness.
-Selected and applied the recommended treatment for the specified
altitude sickness.
Manage Altitude Illness

73
disaster.
Evaluation: You will be tested on your knowledge of cold weather and mountain medical considerations
be dismissed from the course.
Instructional Lead-in (Slide 33) This individual fell while descending Mt. McKinley; the fall was
caused by decreased mental and physical functioning from altitude illness. In addition to altitude
sickness, the individual suffered frostbite and was severely dehydrated. The fall also caused multiple
trauma injuries. Often altitude illnesses mimic other less serious ailments. Because altitude illness is
potentially life threatening, you should assume that any ailment is altitude illness when conducting
operations above 8,000 feet.
37

74
Learning Step/Activity 1 – Define common altitude classifications.
a. (Slide 34) FM 3-97.6, Mountain Operations breaks altitude into five categories. At low altitudes
difficulties with altitude are rare or non-existent. At moderate altitudes there is often reduced physical
performance but altitude illness is rare. Above 8,000 feet, altitude illness becomes more common.
Altitude Classifications
• Altitude: 8,000-12,000
• High altitude: 12,000-18,000
• Extreme altitude: 18,000-29,000
Reference: Medicine for Mountaineering, 5th edition by James A. Wilkerson, M.D.
• Low: Sea Level to 5,000 feet

• Moderate: 5,000-8,000 feet
• High: 8,000-14,000 feet
• Very High: 14,000-18,000
• Extreme: 18,000 and higher
Reference: FM 3-97.6 Mountain Operations

75
Learning Step/Activity 2 – Define the relationship between altitude and oxygen available to the
human body.
a. (Slide 35) 21% of the air is oxygen despite the altitude. But the air pressure falls as elevation
increases. The result is that fewer molecules of oxygen are available to your lungs at higher altitudes.
The most important measurement in this chart is SaO2 or the percent of your arterial blood that is
saturated with oxygen. As altitude increases, the percent of O2 saturation falls – this oxygen
deficiency is known as hypoxia and this condition causes problems with altitude.
Altitude Overview
Altitude BarP PIO2 PaO2 PaCO2 SaO2
• At all altitudes the air is (mm HG)
made up of 21% oxygen 0 760 149 94 41 97
• As you gain altitude the 5,000 630 122 75-81 39 92
air pressure drops 7,500 570 69-74 31-33 92-93
• Less oxygen is 15,000 425 76 48-53 25 86

available to the body
18,000 379 69 40 29 76
because of this reduced
pressure 20,000 352 63 37-45 20 71
• Less oxygen available 25,000 291 32-39 13 68
means you suffer the 29,000 253 42 26-33 9.5- 58

13.8
effects of altitude
BarP: barometric pressure
PIO2: pressure of inhaled oxygen
PaO2: arterial oxygen pressure
PaCO2: arterial carbon dioxide pressure
SaO2: percent of arterial oxygen saturation

76
Learning Step/Activity 3 – Describe the initial physiological response to altitude.
a. (Slide 36) It is difficult to determine how you will respond to altitude. An individual that has a high
level of physical fitness may succumb to altitude illness, while other less fit individuals show few if any
effects. Many of the physiological mechanisms that create altitude illness are poorly understood,
though individual genetic differences are thought to play a large role. Other factors include the
altitude that has been ascended to and the rate of ascent to that altitude. The initial response of the
body to altitude is very important; it is thought to aid in acclimatization. Individuals that have shown a
slow or blunted initial response to altitude may take longer to adjust and typically have more
difficulties with altitude. Here are some of the normal responses you should have to altitude:
(1) Increased rate and depth of breathing: You breathe deeper and faster. Even slight exertions
may leave you breathless.
(2) Decreased oxygen saturation: You saw the chart in the last slide - O2 levels in the blood drop
as you go up.
(3) Changes in blood ph: Your blood becomes more alkaline due to the increase in the breathing
rate and depth (another way of looking at it is that more CO2 is washed out of the blood from the
increase in breathing rate and depth). This produces many of the symptoms of altitude illness.
(4) Pulse Rate and Cardiac Output: Your pulse will race and your heart will pound as activity level
is increased; activities that normally would be routine are increasingly difficult.
(5) Decreased Blood Volume: Blood vessels leak fluid into surrounding tissue. As a result blood
volume decreases. This is compounded by dehydration which is typical of operating at altitude. Now
your blood is harder to pump because it is thicker and your heart has to work even harder.
(6) Sleep Hypoxia: During sleep, respirations may slow or even stop for a few seconds followed by
a rapid increase in respirations and possibly waking. This is a normal body response, but it may
increase the problems with adjusting to altitude.
Initial Physiological Response to

Altitude
• Increased rate and depth of breathing

• Decreased oxygen saturation
• Changes in pH
• Pulse Rate and Cardiac Output
• Blood Volume
• Sleep Hypoxia

77
Learning Step/Activity 4 – Describe the acclimatization process.
a. (Slide 37) As a general rule, acclimatization takes place over the course of three to six weeks.
The adjustment will occur at altitudes up to 17,500 feet; permanent human habitation is not found
above this elevation. Above these altitudes, your body does not adapt and actually begins to break
down. It should be noted that although your body will adjust to altitude, you will NEVER adapt to sea
level performance levels.
(1) Increased Respiratory Volume: You breathe deeper – to get more O2 to the lungs.
Respiration rate will increase to a lesser degree.
(2) Increased Pulmonary Artery Pressure: The blood pressure in your lungs increases. This
tends to open up more capillaries - parts of the lung that may not normally be used at sea level are
utilized. Again this will get more O2 into the blood.
(3) Increased Cardiac Output: The volume of blood pumped by the heart increases.
(4) Increased Number of Red Blood Cells: The lack of O2 stimulates the production or more red
blood cells. Technically it stimulates the release of erythropoetin which is produced in the lungs and
kidneys. This is a powerful hormone that stimulates the bone marrow to produce more red blood
cells.
(5) Changes in Oxygen-Carrying Capacity: The blood releases the O2 it carries more efficiently,
satisfying the organs that need it (especially the muscles).
(6) Changes in Body Tissues: Increased capillaries within muscles, an increase in the
intramuscular O2 carrying proteins, an increase in the size of the cell powerhouses (mitochondria).
Acclimatization
• Increased Respiratory Volume

• Increased Pulmonary Artery Pressure
• Increased Cardiac Output
• Increased Number of Red Blood Cells
• Changes in Oxygen-Carrying Capacity
• Changes in Body Tissues

78
Learning Step/Activity 5 – Identify, treat and prevent acute mountain sickness (AMS).
a. (Slide 38) AMS is collection of non-specific symptoms that can resemble the flu, carbon monoxide
poisoning or a hangover. Dizziness, shortness of breath, headache, insomnia, upset stomach and
mood changes are all typical symptoms. AMS typically occurs at altitudes above 8,000 feet.
(1) Treatment: The ascent rate should be reduced or halted. A wait of 24-72 hours may be
required for symptoms to subside. Over the counter pain medicines and stomach treatments are
useful. If symptoms do not subside, descend to a lower altitude, and wait until symptoms subside
before continuing to ascend.
(2) Diamox (Acetazolamide) is a sulfa-drug that is often prescribed for persons visiting higher
altitudes. It is not a magic pill and because it is a sulfa-drug, those allergic to sulphites cannot take it
(like an allergy to red wine). Diamox is a mild diuretic, so increased water consumption is required
when taking this drug. Diamox actually aids in acclimatization by increasing CO2 levels in the blood,
thus restoring the proper blood pH. It does this by causing you to excrete more bicarbonates in your
urine. It has also been shown to normalize breathing during sleep; this in turn helps with a better
nights sleep and thus better performance during waking hours. Starting the drug prior to ascending
can help determine individuals that may be allergic. It should be prescribed and utilized under the
care of a physician. 125-250 mg twice daily is the recommended dosage.
(3) Prevention: Rapid ascent to altitudes above 8,000 feet is not advised. If a rapid ascent is
made, wait 24-72 hours before continuing to ascend in order to allow the body time to adjust. At
altitudes above 8,000 feet, ascent rates should ideally be around 1,000 feet per day. Faster ascent
rates may be conducted (up to 3,000 feet) as long as additional rest days are planned to allow the
body to adjust. One acclimatization technique is to climb 1,000-3,000 feet higher than the current
altitude, and then return to the initial altitude for the rest cycle (Climb high, sleep low). The next day, a
move can be made to the higher altitude.
Acute Mountain Sickness

What is it? A collection of non- Symptoms: Dizziness,
specific symptoms that can shortness of breath,
resemble the flu, carbon headache, insomnia, upset
monoxide poisoning or a stomach, depression
hangover. Typically occurs at
altitudes above 8,000 feet.
Prevention: Maintain a slow Treatment: Slow or halt ascent;

ascent rate. Work high and rest; aspirin or other OTC meds
sleep low – altitude increases of may help; eat and ensure
greater than 1000’ per day are individual is hydrated; Diamox
not recommended; some may help; descend if symptoms
prescription medications can aid do not subside
acclimatization; adequate
hydration and nutrition

79
Learning Step/Activity 6 – Identify, treat and prevent High Altitude Pulmonary Edema (HAPE).
a. (Slide 39) With HAPE, lungs fill with fluid (blood serum) that leaks from capillaries. Also known as
dry land drowning - as the lungs fill with fluid the individual begins to lose the ability to get oxygen into
the blood stream. In the early stages, shortness of breath is experienced even while conducting
routine tasks. An infrequent cough may be present. As it develops, gurgling respirations (rales), fever
and a frequent cough that produces pink or white frothy sputum. Because symptoms look like a chest
cold, it may go undiagnosed. This is a rare condition that usually occurs at extreme altitudes above
18,000 feet. HAPE is life threatening and a wait of only a few hours can mean death.
(1) Treatment: The only definitive treatment for HAPE is immediate descent to a lower altitude
(2,000-4,000 feet). The Gamow bag (described later), can help to reduce symptoms temporarily.
High Altitude Pulmonary Edema (HAPE)

What is it? Lungs fill with fluid Symptoms: In the early stages
(blood serum) that leaks from shortness of breath during
capillaries. Also known as dry exertion and an infrequent
land drowning - as the lungs fill cough; as it develops shortness
with fluid the individual begins to of breath at rest, gurgling
lose the ability to get oxygen into respirations (rales), and a
the bloodstream. frequent cough that produce
pink or white frothy sputum;
fever; looks similar to
pneumonia
Prevention: Maintain a slow Treatment: Rapid descent of
ascent rate. Work high and 2000-4000’ immediately;
sleep low – altitude increases of oxygen, medications or Gamow
greater than 1000’ per day are bag may temporarily help but
not recommended; some rapid descent is the only
prescription medications can aid definitive treatment; Diamox
acclimatization; adequate helpful in early stages
hydration and nutrition

80
Learning Step/Activity 7 – Identify, treat and prevent High Altitude Cerebral Edema (HACE).
a. (Slide 40) With HACE, fluid (blood serum) that leaks from capillaries in the brain. This creates
intense pressure from swelling inside of the skull mimicking symptoms typically seen with a head
injury. Headache, nausea and/or vomiiting, dizziness, loss of appetite, fatigue, and personality
changes are typical symptoms. HACE is also life threatening and a wait of only a few hours can mean
death.
(1) Treatment: The only definitive treatment for HACE is immediate descent to a lower altitude
(2,000-4,000 feet). The Gamow bag (described later), can help to reduce symptoms temporarily.
Decadron (a steroid) has also been used to help reduce symptoms.
High Altitude Cerebral Edema (HACE)

What is it? Increased Symptoms: Headache, nausea,
intracranial pressure (swelling of dizziness, loss of appetite,
the brain), caused by fluid fatigue and insomnia ; in severe
leaking from capillaries. cases a severe headache and
vomiting
Prevention: Maintain a slow Treatment: Rapid descent of

ascent rate. Work high and 2000-4000’ immediately;
sleep low – altitude increases of oxygen, medications or Gamow
greater than 1000’ per day are bag may temporarily help but
not recommended; some rapid descent is the only
prescription medications can aid definitive treatment;
acclimatization; adequate Dexamethasone (Decadron)
hydration and nutrition may help with symptoms but is
only temporary

81
Learning Step/Activity 8 – Describe the Gamow bag and define its uses.
a. (Slide 41) The Gamow bag is essentially a hyperbaric chamber. It can ‘lower’ the altitude by
3000-5000 feet and cause HAPE, HACE or AMS symptoms to subside for up to 12 hours though
usually the effect only lasts for 3-5 hours. Still, this can allow the patient to self-evacuate to a lower
altitude. Though this sounds minor, those who have operated at altitude know how difficult a medical
evacuation of a litter patient without air support can be. It generally takes 2-6 hours for the symptoms
of altitude illness to subside once the system is pressurized. It weighs about 15 pounds.
b. The patient is placed inside the Gamow bag with warm clothing a sleeping bag with pad, water
and an altimeter. The bag is then pressurized using a foot pump; the foot pump must be utilized at a
rate defined in the instruction manual to maintain the pressure (usually around 20-30 times a minute).
The altimeter is used to monitor the effective drop in altitude created by the bag.
Gamow Bag

82
Learning Step/Activity 9 – List guidelines for conducting operations at altitude.
a. (Slide 42) These are some of the common guidelines that should be followed when planning and
conducting operations at altitude.
(1) If possible, don't fly or drive to high altitude. Start below 10,000 feet (3,048 meters) and walk
up.
(2) If you do fly or drive, do not over-exert yourself or move higher for the first 24-72 hours.
If you go above 10,000 feet (3,048 meters), only increase your altitude by 1,000 feet (305 meters)
per day and for every 3,000 feet (915 meters) of elevation gained, take a rest day.
(3) "Climb High and sleep low." This is the maxim used by climbers. You can climb up more than
1,000 feet (305 meters) in a day as long as you come back down and sleep at a lower altitude.
If you begin to show symptoms of moderate altitude illness, don't go higher until symptoms decrease
(“Don't go up until symptoms go down"). If symptoms increase, go down, down, down!
(4) Keep in mind that different people will acclimatize at different rates. Make sure all of your party
is properly acclimatized before going higher.
(5) Stay properly hydrated. Acclimatization is often accompanied by fluid loss, so you need to
drink lots of fluids to remain properly hydrated (at least 3.5-5 quarts per day). Urine output should be
copious and clear.
(6) Take it easy; don't over-exert yourself when you first get up to altitude. Light activity during the
day is better than sleeping because respiration decreases during sleep, exacerbating the symptoms.
(7) Avoid tobacco and alcohol and other depressant drugs including, barbiturates, tranquilizers,
and sleeping pills. These depressants further decrease the respiratory drive during sleep resulting in
a worsening of the symptoms.
(8) Eat a high carbohydrate diet (more than 70% of your calories from carbohydrates) while at
altitude.
(9) The acclimatization process is inhibited by dehydration, over-exertion, and alcohol and other
depressant drugs.
Tips for Operations at Altitude

•Driving or flying to altitudes above 10,000 feet is not
recommended; it will take 24-72 hours to adjust if you do fly
to altitudes above 10,000 feet
•Stay properly hydrated…you can lose up to 4 liters per day

just breathing…think about water sources, and the
resources required to make the water drinkable (filters,
stoves, iodine etc.)
•High carbohydrate diets are recommended
•If an individual shows symptoms of altitude illness, you

cannot take that person to a higher altitude until the
symptoms have subsided; if the symptoms worsen, it is time
to evacuate that individual to a lower altitude. Even a wait of
a few hours can mean the difference between life and death.

83
(Slide 43)
Tips for Operations at Altitude

•24-72 hours after arrival at altitude, begin a PT
program that will mimic the operations you will be
conducting; if possible train at higher altitudes and
sleep at lower altitudes
•Diamox can help but may not be appropriate for all

individuals
•Tobacco, alcohol, dehydration, depressant drugs

and over-exertion will inhibit acclimatization
•Remember that you and your soldiers will never be

able to perform to sea level capacity; everything will
take longer to accomplish

84
SECTION IV. SUMMARY
You now have a general idea of the medical conditions that can develop when operating at altitudes
above 8,000 feet. This knowledge will allow you to take steps to prevent altitude illness from occurring
and allow you to treat altitude illness if it does occur.
Check on Learning
1. Where do most problems with altitude begin?

Most problems occur at altitudes above 8,000 feet.
2. What is the treatment for AMS?

Slow or halt ascent; rest; over the counter pain and stomach medications as required; descent if
symptoms do not subside. Diamox can be used to treat or to assist in prevention of AMS provided
the individual is not allergic to sulfa drugs.
3. What is HAPE? High altitude pulmonary edema. It is also known as dry land drowning. Due to a
decreased pressure at altitude, blood serum leaks from the capillaries into the lungs. The lungs fill
with fluid and eventually the individual will die.

85
699-8015: Manage common cold weather and mountain environmental injuries
Motivator (Slide 45) A two man fuel handler team deployed to the field in support of maneuver units in
preparation for an upcoming exercise. Although the plan called for the team to support from the main area
in garrison, the participants decided to stay in the field to avoid traveling back and forth from the rear. The
team stayed in the UMCP in a soldier crew tent using a commercial off the shelf heater to warm-up the
tent at night (temperatures at night were between 30-40 degrees). The chain of command was aware that
the team was using the commercial off the shelf heater to heat their tent. The team departed early
afternoon to support the maneuver units, and because of various missions did not return until early
morning. Late the next morning some Soldiers in the UMCP attempted to wake the team to obtain fuel.
One of the Soldiers noticed a peculiar smell coming from the tent and made a comment to his supervisor
about it. The supervisor investigated and found that the two man team had passed away during the night.
It is suspected that they started the heater to warm up when they returned from their mission. They
closed all of the vents and door flaps to keep the heat in and then went to sleep. The carbon monoxide
build-up from the heater caused the deaths.

ACTION Manage common cold weather and mountain environmental injuries
CONDITION Given the ECWCS, other issued cold weather clothing items, and issued
cold weather sleep system with insulating pad, access to a warming shelter,
under field conditions where temperatures range from 40º F to – 60º F
STANDARD Soldier:
-Identified all of the signs and symptoms of common cold weather and
mountain environmental injuries.
-Selected and applied the recommended treatment for common cold
weather and mountain environmental injuries.
Manage common cold weather and mountain environmental injuries

86
disaster.
Evaluation: You will be tested on their knowledge of cold weather and mountain medical considerations
be dismissed from the course.
Instructional Lead-In (Slide 45) Harsh working conditions in cold and mountainous regions can conspire
to cause environmental injuries not typically found in temperate regions. With a few additional
considerations, you can easily prevent these injuries.

87
Learning Step/Activity 1 – Identify, prevent and treat snow blindness.
a. (Slide 46) Snow blindness is burning of the cornea of the eye by exposure of the eyes to intense
UV rays of the sun in a snow-covered environment. Snow blindness can occur even when the sun is
diffused by clouds. Symptoms include severe eye pain, pink or red eyes, and extreme sensitivity to
light.
(1) Treatment: The individual’s eyes should be loosely bandaged with sterile gauze. Rest is
prescribed for at least 36-72 hours; as the individual is essentially blind during this time they will
need constant care in the field to accomplish even routine tasks. Over the counter pain medications
should be used to manage pain.
(2) Prevention is simple – sunglasses or tinted goggles (preferably with UV protection) must be
utilized in a snow covered environment. Improvised slit glasses can be used in survival situations.
Snow Blindness
What is it? Burning of the Symptoms: Pain, red eyes,
cornea of the eye by exposure of watery or gritty feeling in the
the eyes to intense UV rays of eyes.
the sun in a snow-covered
environment.
Prevention: Sunglasses or Treatment: Rest and total

goggles in a snow covered darkness for 36-72 hours;
environment; improvise slit evacuate if no improvement after
glasses in a survival situation this time.

88
b. (Slide 47) Two examples of a way to reduce exposure to the sun in the absence of sunglasses –
one is made with webbing and 550-cord, the other with a piece of birch bark.
Improvised Slit
Glasses

89
Learning Step/Activity 2 – Identify, prevent and treat carbon monoxide poisoning.
a. (Slide 48) Carbon monoxide poisoning occurs when individuals breathe fumes from
improperly ventilated heat sources (vehicles, space heaters etc.). Carbon monoxide is an odorless
gas that replaces oxygen in the blood stream. Red blood cells actually bind with carbon monoxide
more readily than with oxygen; exposures of just a few hours can result in death. Initially symptoms
include headache, confusion, tiredness, and excessive yawning. In more severe cases, cherry red
lips and unconsciousness precedes cardiac arrest and death.
(1) Treatment: Move the individual to fresh air, or remove the source of the carbon monoxide.
Administer 100% oxygen (CPR may be necessary in severe cases), and evacuate to definitive care.
(2) Prevention: ARMY APPROVED HEATERS ARE THE ONLY HEATERS AUTHORIZED FOR
USE IN SLEEPING AREAS, LIVING AREAS, OR ADMINISTRATIVE WORK AREAS OCCUPIED
BY PERSONNEL. REFER TO USARAK CG/CofS POLICY LETTER #0-14. A licensed, fully
dressed, alert fire guard, with an operational fire extinguisher (5lb minimum), will be present any time
the heater is in operation. If you suspect a problem with the heater (i.e. soldiers are exhibiting the
signs and symptoms of CO poisoning) shut the heater down and rectify the problem. No Soldiers will
sleep in a running vehicle.
Carbon Monoxide Poisoning

What is it? Replacement of Symptoms: In mild cases
oxygen with carbon monoxide in headache, confusion, tiredness,
the blood stream caused by excessive yawning; in severe
breathing fumes from improperly cases cherry red lips (grey in
ventilated heat sources. dark skinned individuals),
unconsciousness
Prevention: Use only Army Treatment: Move to fresh air;

approved heaters in sleeping CPR if needed; evacuation
areas and ensure that all
personnel (to include fire
guards) are properly licensed on
stove; never sleep in running
vehicles; always post fire guard
when operating heaters in
sleeping areas

90
Learning Step/Activity 3 – Identify, prevent and treat giardia.
a. (Slide 49) Giardia and another related parasite, cryptosporidium are commonly found in
contaminated backcountry water sources. Nearly 2.5 million cases are diagnosed in the United
States annually. When ingested, these parasites cause intense diarrhea, nausea, weakness and
loss of appetite. It generally takes 10 days to two weeks after ingestion for symptoms to appear.
(1) Treatment: Diagnosis and treatment must be determined by qualified medical personnel.
Antibiotics are used to treat the illness.
(2) Prevention: Treat all water sources as suspect. Water can be brought to rolling boil – this will
kill all waterborne pathogens. Most commercial off the shelf water purification devices will remove
waterborne pathogens – refer to the manufacturers instructions. Refer to FM 21-10 Field Hygiene
and Sanitation for additional guidance on water purification methods.
Giardia
What is it? A protozoan parasite Symptoms: Abdominal pain,
commonly found in backcountry intense nausea, intestinal gas,
water sources. diarrhea, weakness, loss of
appetite
Prevention: Treat all suspect Treatment: Hydration, I.V.

water sources by boiling, fluids, medications, evacuation
chemical treatment or filtration.

91
Learning Step/Activity 4 – Identify, prevent and treat constipation.
a. (Slide 50) Some individuals are reluctant to relieve themselves when conditions are less than
ideal. Cold weather, wind and poorly constructed or maintained latrines create less than ideal
conditions for heeding nature’s call. This can all lead to constipation, an embarrassing and
potentially debilitating condition.
(1) Treatment: Stool softeners provided by medics can help. Enema may be required. In severe
cases manual removal or surgery may be required.
(2) Prevention: At a minimum provide a sheltered latrine area for Soldiers to utilize. Proper
hydration and added dietary fiber can help to maintain regularity.
Constipation
What is it? Infrequent or difficult Symptoms: Abdominal pain,
passage of stool caused by abdominal rigidity, painful
dehydration, dietary patterns, defecation, cramping, loss of
and ignoring nature’s call. appetite, headache
Prevention: Adequate hydration Treatment: Manual removal,

and nutrition; heed nature’s call surgery

92
Learning Step/Activity 5 – Identify, prevent and treat heat exhaustion.
a. (Slide 51) Heat exhaustion symptoms. This is early volume shock caused by dehydration.
Nausea, vomiting, headache, dizziness, restlessness and even a brief loss of consciousness are
common. Profuse sweating and/or skin color changes are variable.
(1) Treatment: A person with heat exhaustion should lie down in a cool shady pace with the feet
elevated. Fluid replacement with cool water and/or IV treatment. OSR (electrolyte replacement
drinks), type therapies will help with the re-hydration process. Normal urine output and a rest period
of 6-12 hours are required before returning to physical activity.
(2) Prevention: Adequate hydration, appropriate clothing adjustments and moderated physical
exertion in hot conditions are the most reliable way to prevent heat exhaustion.
Heat Exhaustion
What is it? Early volume shock Symptoms: Weak, thirsty, and
caused by dehydration. The nauseated; vomiting is common;
core temperature is generally pulse and respiration rates will
NOT elevated. be higher; temperature is normal
or slightly elevated; mildly
altered mental status
Prevention: Drink before you Treatment: Stop physical

become thirsty; keep up with the exertion; assist evaporative
demands for water (3.5- 5 quarts cooling with cool water on the
per day); clothing adjustments; skin; re-hydrate (IV treatment is
moderate physical exertion in best); it may take up to twelve
hot climates hours to bring the individual
back to normal

93
Learning Step/Activity 6 – Identify, prevent and treat heat stroke.
a. (Slide 52) Heat stroke symptoms. This is a serious life threatening illness. Rectal temperature
will be above 104º F. Onset of heat stroke can be sudden and collapse of the individual is common.
A severely altered mental state (usually unconsciousness), with convulsions, dry red skin or covered
in sweat, dilated pupils, unresponsive to light.
(1) Treatment: This illness involves a shut down of major systems in the body (brain, heart, liver,
kidneys). Because of this the individual MUST be evacuated immediately. Immediate treatment
involves moving the individual to a shaded, cool area, soaking the clothing with water. Wet towels,
sheets or other light clothing can also be used. Fan the individual to increase air circulation and
evaporation. IV fluids are recommended. Oxygen can be administered if available and body parts
should be massaged to help propel cooled blood back into the organs of the body and head.
Rebound is common three to four hours after cooling (still another reason for evacuation). There are
no drugs that will help with the cooling process.
(2) Prevention: Adequate hydration, appropriate clothing adjustments and moderated physical
exertion in hot conditions are the most reliable way to prevent heat exhaustion.
Heat Stroke
What is it? Most severe form of Symptoms: Rapid onset;
heat illness. Rectal temperature Collapse; pulse and respiration
above 104º F. elevated; skin may be covered in
sweat or dry and red; severely
altered mental state;
unconsciousness; convulsions;
dilated pupils that are
unresponsive to light
Prevention: Prevention: Drink Treatment: Evacuate
before you become thirsty; keep immediately; move to cool area
up with the demands for water and shade from direct sunlight;
(3.5- 5 quarts per day); clothing soak clothing with water and fan
adjustments; moderate physical to increase air circulation and
exertion in hot climates evaporation;
IV fluid replacement

94
Learning Step/Activity 7 – Identify, prevent and treat hyponatremia.
a. (Slide 53) Hyponatremia symptoms. Also known as water intoxication. This results from an
excess intake of water (there are other forms of this illness caused by different mechanisms). The
excess water in the system causes an imbalance in electrolytes. The symptoms mimic dehydration,
heat exhaustion and heat stroke making it very difficult to diagnose. Forced hydration and intake of
large quantities of water over a short period of time is not recommended.
(1) Treatment: If treated as for heat illness, serious brain injury or death can occur. Evacuation
must be immediate; misdiagnosis and treatment can lead to death.
(2) Prevention: Monitor water consumption of subordinates; forced hydration of large quantities
of water is not authorized.
Hyponatremia
What is it? Also known as water Symptoms: dizziness;
intoxication; it is an excess of headache; swelling in the hands
water that causes an electrolyte and feet; nausea, vomiting;
imbalance altered mental state
Prevention: Monitor water Treatment: Evacuate

consumption of subordinates; immediately; must be evaluated
forced hydration of large and treated by a physician.
quantities of water is a causative
factor and is not recommended.

95
SECTION IV. SUMMARY
You should now have a good understanding of some of the more common environmental injuries that can
take you and your Soldiers out of the fight. Use this information to prevent these injuries from occurring in
the first place.
Check on Learning.
1. What are the common causes of CO poisoning?

Exhaust from improperly vented heaters in enclosed, un-vented shelters or vehicles.
2. How long should you boil water before using it for drinking?
It should be brought to a rolling boil in order to kill all waterborne pathogens.

96
699-8016: Wear cold weather clothing and equipment
Motivator (Slide 1) Improper wear or use of cold weather clothing can result mission failure, injuries, or
death. During this period of instruction, you will learn the basic principles of Cold Weather Clothing and
Equipment. As a result of this instruction you will be able to properly wear and care for the clothing and
equipment that you have been issued. This additional clothing and equipment does not necessarily
prevent you from becoming a cold weather casualty. You must have proper training and knowledge of
how to wear and care for this equipment and experience using this clothing in the field in order to prevent
cold weather injuries.
Clothing and Equipment

for Cold Weather and
Mountain Operations

ACTION Wear cold weather clothing and equipment
CONDITION Given the ECWCS, other issued cold weather clothing items, and issued cold
weather sleep system with insulating pad, under field conditions where
temperatures range from 40º F to – 60º F
STANDARD Soldier used issued cold weather clothing and equipment to prevent cold
weather injuries.
Wear cold weather clothing and equipment

97
disaster.
Risk Assessment: Low for classroom instruction. For field training during the remainder of the course
risk level will be determined by the squad instructor based upon the current conditions.
Evaluation: You will be tested on your knowledge of clothing and equipment for cold weather and
mountain operations during a one hour written examination at the conclusion of the course (Refer to
training schedule for date/time of exam) and during the FTX. You must score a 70% on the written exam.
If you fail the written exam, you will be given a second exam after re-training has been conducted. If you
fail this second examination, you will be dismissed from the course. In addition you must not sustain a
cold weather injury during the conduct of the course. If you sustain a cold weather injury, you will be
dismissed from the course.
Instructional Lead-In (Slide 3) All of these are cases of deep frostbite. All resulted when the individuals
were caught unprepared for severe weather. All cold injuries are preventable. Knowledge of how to
properly wear and maintain issued clothing and equipment is a fundamental skill that you must possess to
prevent these types of injuries.

98
Learning Step/Activity 1 – Describe the purpose of the cold weather uniform.
a. (Slide 4) A cold weather uniform should-

(1) Keep you warm down to ambient temperatures of -60°F, (with moderate movement)
(2) Keep you dry
(3) Protect you from wind
(4) Provide ventilation
Cold Weather Uniform Should:

Keep you warm
Keep you dry
Protect you from the wind
Provide ventilation

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Learning Step/Activity 2 – Provide an overview of the Extended Cold Weather Clothing System
(ECWCS).
a. (Slide 5) Three principles were used to design ECWCS:
(1) Insulation reduces the amount of heat lost to the environment.
(2) Several loose layers are better than one heavy garment. This produces greater insulation and
adjustability. Air space is insulation. When getting CIF clothing it is a good idea to get larger sizes than
normally worn. An experienced sponsor should accompany newly assigned Soldiers to CIF.
(3) Ventilation is a means of controlling the amount of heat retained or lost. Excess heat produces
perspiration. This soaks the clothing and raises the potential for cold weather injuries. In a cold weather
environment, it is difficult to mandate a particular uniform for a given temperature. Many factors influence
this - activity level, individual metabolism, and level of training of the soldier.
Extended Cold Weather Clothing

System Design Principles
Insulate: Any material that reduces the amount of
heat lost to the environment
Layer: Several layers of clothing provide more insulation and

flexibility than one heavy garment even if the heavy garment is
as thick as the combined layers
Ventilate: Helps to maintain a comfortable body temperature

by allowing excess heat to escape

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b. (Slide 6) There are two versions of ECWCS issued to Soldiers – Generation II ECWCS and
Generation III ECWCS. Both generations consist of three basic layers:
(1) Base Layer (also known as Inner or Wicking layer) – The base layer(s) are those adjacent to your
body. They should be comfortably loose. The main purpose of these garments is to wick excess moisture
away from your body.
(2) Insulation Layer – The insulation layer(s) are the intermediate layer(s). They provide volume to
enable you to trap warm air between your body and the outer garments. In addition, the insulation layer(s)
help wick away excess moisture. These layers should be comfortably loose to trap a sufficient volume of
air.
(3) Outer Shell Layer – The outer shell layer(s) are the external layers that protect you from the
elements in your environment. A main function is to keep you dry. In addition, they provide additional
volume for trapping warm air. These layers should also be comfortably loose.
Extended Cold Weather Clothing

System Overview
Base Layer – also known as inner or wicking layer, the base
layer(s) are designed to wick excess moisture away from
your body.
Insulation Layer – intermediate layer(s) that provides volume

to enable you to trap warm air between your body and outer
garments
Outer Shell Layer – external layer that protects you from the
elements providing protection from wind and moisture

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Learning Step/Activity 3 – Explain the general use guidelines for ECWCS.
a. (Slide 7) Using the acronym C.O.L.D. (Clean, Overheating, Loose and Layered, Dry), you can easily
remember the principles for the most effective use of ECWCS.
l Clothing Guidelines
C- Keep it Clean
O- Avoid Overheating
L- Wear clothes Loose and Layered
D- Keep clothing Dry
b. (Slide 8) Keep it clean. Clothing keeps you warm by trapping warm air against your body and in the
pores of the clothing itself. If these pores become filled with dirt, sweat or other grime, the clothing will not
be able to do its job efficiently. Therefore, your clothes should be kept as clean as possible to keep you
as warm as possible. Dry rub and air clothing when washing is not possible (demonstrate rubbing).
C- Keep it Clean
Dirt and grease reduce the insulating
properties of clothing
Clean whenever possible
Dry rub clothing in the field

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c. (Slide 9) The key is not to be hot, but comfortably cool; not cold, but cool. If at any time you are
sweating, you are too hot. Sweating is a sign that your body wants and needs to cool down. Let the
environment cool you down, not sweat. This may be as simple as opening buttons or unzipping zippers,
instead of removing a whole layer of clothing. Once you stop work, or feel yourself getting cold, bundle up
again just enough to keep cool.
O-Avoid Overheating
Don't overdress
Causes excess perspiration
Dampness reduces insulating properties of

clothing
Perspiration evaporates, cooling the body
d. (Slide 10) Wear clothes Loose and Layered. Clothes should fit loosely for comfort. The more layers
used, the more warm air will be trapped. Tight clothing will prevent air from becoming trapped between
your body and clothes. It is the warm air that keeps you warm, not the clothes. Several thin layers working
together will work better than one thick layer alone.
L- Wear clothes Loose and Layered

Tight clothing restricts circulation
Restricts movement
Lessens volume of trapped air

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e. (Slide 11) Keep clothing dry. Once you clothing is wet, the water or sweat evaporates, drawing
warmth away form your body. Moisture will enter clothing from two directions:
(1) Inside- perspiration and condensation/frost at cold temperatures from the moist heat put off from the
body.
(2) Outside- Precipitation- rain, snow, ice, frost Moisture reduces insulation properties. Brush snow
and ice off clothing before entering heated shelters. Clothing can be dried by air outside or inside heated
shelters away from heat source. Leather items should be dried slowly. Turn GORE-TEX® clothing inside-
out to facilitate drying in a heated shelter.
D- Keep clothing Dry

Moisture enters from both outside and inside
Dampness lessens insulating properties of

clothing
Brush snow off clothing before entering heated

shelter
Air dry clothing away from direct heat source
Dry leather items slowly

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Learning Step/Activity 4 – Describe the components of the Generation II ECWCS (Gen II ECWCS).
a. (Slide 12) The Generation II ECWCS issue consists of the following items:
NOTE: CIF and/or your unit may issue other/additional items based upon your clothing menu and
mission.
(1) Base Layer-

• Polypropylene undershirt and drawers with standard wool socks (commonly referred to as
polypro)
• You may be issued a lightweight and/or mid-weight polypropylene undershirt and drawers
(2) Insulation Layer-

• Shirt, Cold Weather, Black Fleece and Overalls, Cold Weather, Black Fleece (commonly referred
to as Polar Fleece top and bottom) and/or
• Liner Cold Weather Coat and Liner Cold Weather Trousers (commonly referred to as smoking
jacket and pants)
(3) Outer Shell Layer-

• ECWCS Parka, Universal Camouflage Pattern, Generation II, parka and trousers (commonly
referred to as Generation II GORE-TEX® top and bottom)
• GORE-TEX® gloves with inserts, trigger finger mittens with inserts, arctic mittens
• White vapor barrier boot and/or intermediate cold weather boot (ICW).
• Wool balaclava, and/or pile cap, and/or OR Windstopper Balaclava, neck gaiter

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Learning Step/Activity 5 – Describe the components of the ECWCS Gen II base layer.
NOTE: The instructor will talk a demonstrator through the different layers of clothing and proper wear of
each layer. The demonstrator will start with the base layer and add items as indicated by the instructor.
a. (Slide 13) Wear the polypro next to your skin. DO NOT wear cotton undergarments under polypro. DO
NOT wear ACUs on top of the base layer in the field. Cotton absorbs and traps moisture. Wear a pair of
nylon shorts as an alternative to cotton underwear. Women should wear a nylon sports bra.
b. The issued polypro has a zipper that can be used to form a mock turtle neck or allow you to ventilate
as workload increases.
c. You can layer the lightweight and mid-weight and heavyweight versions of polypro. This allows you
more flexibility to remove garments as workload increases.
d. You can wear a single wool sock or a two sock system as shown in the slide. Wear the nylon dress
sock or a polypro liner sock under the wool sock for more effective wicking.
e. Arctic necklace: A 550 cord necklace with a lighter and chap stick can be worn next to the body. This
allows you to keep the lighter warm and at your disposal when required.
GEN II ECWCS: Base Layer

Polypro undershirt and drawers:
• Wear next to skin
• DO NOT wear cotton undergarments

under polypro
• Standard issue is shown; lightweight

and mid-weight are available and may
be issued
• Worn with single wool sock or two

sock system

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Learning Step/Activity 6 – Describe the components of the Gen II ECWCS insulation layer.
a. (Slide 14) Liner, Cold Weather Coat and Trousers. This layer is made from the same material as the
poncho liner – 1 ounce rip stop nylon quilted over polyester batting. Wear this item over the base layer.
b. The coat has slits under the arms for ventilation.
c. The trousers are intentionally sized short, to avoid the need to tuck them into the boot.
GEN II ECWCS: Insulation

Layer
Liners, Cold Weather – Coat and Trousers:
• Wear over base layer
• Same material as poncho liner
• Coat has slits under arm for ventilation
• Trousers are sized short intentionally

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d. (Slide 15) This layer was originally developed as part of the Special Operations Forces Personal
Equipment Advanced Requirements (SPEAR) Lightweight Environmental Protection (LEP) to replace the
bear suit. Wear the polar fleece over the base layer.
e. The shirt has a “pit zips” for ventilation. The full length zipper can be used to form a mock turtle neck
or for ventilation as required. There is also a draw string at the bottom that can be cinched tight to keep
wind from coming up under the shirt.
f. The bibs are also intentionally sized short. There are full length zippers on each pant leg to allow you
to don and remove the bibs without removing your boots.
g. The Army has approved the use of this garment as an outer shell layer. However, it offers little
protection from the wind and no protection from moisture. The USARAK policy is that (IAW USARAK
Pamphlet 600-2), “(c) The issued black polartec fleece will not be worn as an outer garment.”
GEN II ECWCS: Insulation

Layer
• Polar Fleece Shirt
• Polar Fleece Overalls
• The USARAK policy is that (IAW USARAK

Pamphlet 600-2 policy), “(c) The issued
black polartec fleece will not be worn as an
outer garment while outdoors.”

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Learning Step/Activity 7 – Describe the components of the Gen II ECWCS outer shell layer.
a. (Slide 16) You may be issued the Generation I or Generation II GORE-TEX® :
(1) Generation I GORE-TEX® is issued in woodland camouflage. The Parka has an inner liner and has
buttons on the hood to allow you to attach a fur ruff. The jacket also has a sleeve pocket, two map
pockets adjacent to the zipper (commonly referred to as Napoleon pockets) and two cargo pockets at the
waist. There is a snow skirt to prevent snow and wind from entering underneath the jacket. There are “pit
zips” for ventilation. The trousers have false pockets that are used as hand warmers. Generation I is
being phased out of the inventory.
(2) Generation II GORE-TEX® is issued in woodland camouflage, desert camouflage or the universal
camouflage (ACU) pattern. The Parka has does not have an inner liner. There are hand warmer and
cargo pockets at the waist as well as two map pockets adjacent to the zipper and two sleeve pockets.
The hood can be stowed away, but does not have points of attachment for a fur ruff. There is a snow skirt
to prevent snow and wind from entering underneath the jacket. It also has “pit zips” for ventilation. The
trousers have two hand warmer pockets and two cargo pockets.
(3) Wear the suspenders with the trousers. Put suspenders on so that the x pattern is centered
between your shoulder blades. Wear the metal hook so that the piece of fabric is against your body to
prevent the metal hook from rubbing against your body.
(4) Wash GORE-TEX® in any commercially available detergent. Setting should be permanent press or
cotton sturdy. Garment must be thoroughly rinsed – residual detergent will decrease the water repellency
qualities. Over time the water repellent qualities of GORE-TEX® will be degraded by washing and normal
use. There are products and procedures that can help restore the water repellent qualities of GORE-
TEX®. Some post laundry facilities will do this for you. 24 8 oz bottles NSN 8030-01-408-9446 Cost
$102.91. Post Laundry can get in 5 gallons NSN 8030-01-408-9444. 55-gallon drums are also available
with NSN 8030-01-408-9455. Some commercially available products that are authorized for use are
StormShield (877-330-8760), Protex 2000 (800-658-5958) or X-pel (800-652-2533). To treat with any of
these products wash the GORE-TEX® according to the label instructions. Then run the GORE-TEX®
through a wash cycle without any detergent to ensure that it is completely rinsed clean of any soap
residue. Set the machine again to the wash cycle and set the temperature to warm. Fill the machine until
the clothing is completely covered with water. Add the water repellent (two ounces for the parka or 3
ounces for parka and trousers) and continue the wash cycle until it is completed. Tumble dry the clothing
on permanent press and at medium heat (less than 130º) until dry.
(5) In the field, dry rub clothing to clean it.
b. You can wear the balaclava in three configurations:
(1) As a hat. Fold the bottom of the balaclava to the inside to form a hat. Place the hat onto your head
with the face opening to the rear. As you breathe, condensation from your breath will form on your
forehead. If you need to change configurations later, this will prevent you from placing wet material onto
your face.
(2) Balaclava down, face exposed. Pull the balaclava over your head. Pull the lower portion of the face
opening under your chin.
(3) Balaclava down, face covered. Pull the lower portion of the face opening up over your mouth and
nose. Use goggles to cover eyes and remaining exposed skin if required.
(4) Never change the configuration of the balaclava during PT. Anticipate the configuration that will
work best for the activity. This will come with experience. If you start with it down, leave it down; changing
the configuration exposes wet skin to the cold air and is the cause of many of the frostbite cases in
USARAK.
c. Issued Boots:
(1) Intermediate Cold-Wet Boots (ICWB) with removable liners (tan) NSN 8430-01-527-8274, are rated
from 68º F to +14º F. You should receive two pairs of liners with this boot.
(2) Army Combat Boots (Hot Weather), NSN 8430-01-514-4935, are not acceptable for cold weather
environments.
(3) Army Combat Boots (Temperate Weather) NSN 8430-01-516-1506, are acceptable until the
temperature drops below 32º F.

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(4) Extreme Cold Weather Boots (ECWB) NSN 8430-00-655-5535. They are also known as White
Vapor Barrier boots, VB boots, and bunny boots. They are rated 14º F to -60º F and are for use in cold
dry environments. Some VB boots have a pressure relief valve. The valve is used for airborne operations;
when you change altitude rapidly, open the valve briefly to equalize pressure and then close the valve.
For all other operations, keep the valve closed to prevent moisture from entering the boot. Wipe VB boots
out at least once daily and change socks at the same time.
(5) Black Vapor Barrier Boots are rated to -20º F and are for use in Cold Wet Environments. These are
no longer issued in Alaska.
(6) There is a fine line in between the point at which soldiers should switch from the ICW to the VB
boot. The USARAK 385-4, Risk Management for Cold Weather Operations gives guidelines based on
temperature zones. Temperature zone III 14º F to -19º F is the recommended time to switch to VB
boots. It must be stressed that this is dependent on workload and that leaders should ensure that both
pairs of boots are available to Soldiers in the event of a temperature swing or change of mission. This will
give maximum flexibility.
d. The neck gaiter can be worn in three configurations:

(1) Wear it around your neck as a turtle neck.
(2) Wear it pulled up over your head, with the face exposed.
(3) From the second configuration, pull the bottom of the gaiter up over your mouth and nose.
e. Gloves. At a minimum, always wear a contact glove when working in the cold.
®
(1) Wear the leather GORE-TEX gloves with the wool inserts. Try these on at CIF to ensure proper fit
with inserts. The inserts serve as a contact glove. You are issued 2 pairs of wool inserts.
(2) The trigger finger mittens are made of canvas and deer skin palms (maintains flexibility in cold).
Wear the trigger finger mittens with the wool trigger finger inserts. You are issued two pairs of inserts.
(3) The arctic mittens are made of canvas with deer skin palm and a polyester fiber backing that serves
as a face warmer. They have a removable liner made from the same material as the poncho liner. Pull the
liners out and inspect for holes, especially near any seams.
(4) Both the trigger finger mittens and arctic mittens have lanyards that allow you to remove the mittens
without losing them. Wear the lanyard over your head. If you are not wearing the mittens, tuck them
inside your outer shell to keep snow out of them and to keep them warm for later use.
(5) Remember that fuels do not freeze and will be the same temperature as the air. ALWAYS wear
POL handler gloves when working with fuels to prevent frostbite.
(6) Keep routine tasks routine by rehearsing with mittens.
f. Make every effort to dry out clothing as soon as possible so that it can be re-used when needed.
Damp clothing items can be worn close to the body (between the inner and intermediate layer) to dry or
can be placed in the sleeping bag to dry out overnight. Larger items that have become wet should not be
placed in the sleeping bag. Instead place them between the sleeping bag and sleeping mat or on drying
lines in a heated tent.

110
Gen II ECWCS: Outer Shell
Layer
• Wear GORE-TEX® over base and insulation
layers or over base layer for heavier activity levels
• Wear the GORE-TEX® trousers with suspenders
• GORE-TEX® water repellency can be restored
• Three balaclava configurations
• Three neck gaiter configurations
• Boots issued in basic training are NOT for cold
weather
• Below 14º F, you should wear the white VB boot
• Always wear a contact glove when temperatures
are below 32º F
Learning Step/Activity 8 – Describe the sleep systems available to soldiers.
a. (Slide 17) The Modular Sleep System (MSS) is designed for a temperature range of +50º F to -40º F.
At the low end of this range, you will only be comfortable for about four hours of sleep because as you
sleep, you compress the sleeping bag material. This system will replace all other sleep systems issued in
the US Army.
(1) Use the patrol bag (Green/Foliage Green) when temperatures are above 30º F. If you do not have a
shelter, use it with the bivouac cover.
(2) Use the Intermediate cold weather bag (Black/Gray-Green) from 30º F to -10º F. If you do not have
a shelter, use it with the bivouac cover.
(3) In temperatures below -10º F, insert the Black Bag into the Green bag and snap and zip them
together. Use this inside the bivouac cover for a temperature rating of -40º F. The newer ACU style is
rated to -45º F.
(4) Wear no more than a single base layer inside the bag. You should not sweat inside the bag.
b. You are also issued a 24’’ x 72” x 3/8” thick polyethylene foam pad that is designed to put insulation
between you and the ground. This insulating layer is essential to the sleep system as it prevents
conductive heat loss to the ground. Use pine boughs, cardboard etc. as an insulating layer if the sleeping
pad is lost or destroyed.
c. You may be issued an air mattress. Open the valve to allow the mattress to self-inflate. This feature
can fail in the field and you may need to blow the air mattress up. This introduces moisture into the air
mattress and may cause problems with the valve freezing in the open or closed position.

111
Modular Sleep System (MSS)
The complete MSS system weighs
about 7 pounds and includes:
• Patrol Bag is rated 50º F to 30º F
• Intermediate Cold Weather Bag

is rated 30º F to -10º F
• Vapor Permeable GORE-TEX® Bivouac

Cover
• Intermediate Cold Weather bag goes

inside the Patrol Bag which goes inside the
Bivouac Cover. This provides protection
from -10º F to -40º F for 4 hours of sleep.
• The newer ACU style is rated to -45º F

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Learning Step/Activity 9 – Review the USARAK cold weather PT policy.
NOTE: Instructors review the CG/CofS Policy Letter #0-08 Cold Weather Physical Training Policy
(Appendix E).
Turn to Appendix E and look at the CG Policy Letter reference Cold Weather PT.
Learning Step/Activity 10 – Describe the components of the Generation III ECWCS.
a. Gen III ECWCS is a seven layer clothing system being fielded in USARAK. Different versions have
been fielded; some of the items shown in the slides show may be slightly different from what you have
been issued.
b. (Slide 18) Level 1: Lightweight Cold Weather Undershirt and Drawers
(1) Long sleeve top and full-length bottom garments constructed out of silk-weight moisture wicking
polyester. The material aids in the movement of moisture from the skin to the outer layers both while the
wearer is moving or static.
(2) The top has holes in the sleeves for the thumbs. Place your thumbs through the holes to keep the
garment down around your wrist.
(3) Wear next to skin or with the mid-weight cold weather shirt and drawers for added insulation and to
aid the transfer of moisture.
Generation III ECWCS

Level 1: Base Layer
Lightweight Cold Weather Undershirt
and Drawers
Long sleeve top and full-length bottom

constructed from silkweight moisture
wicking polyester
Material aids in movement of moisture

from the skin to the outer layers

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c. (Slide 19) Level 2: Mid-Weight Cold Weather Shirt and Drawers
(1) Long sleeve top and full-length bottom garments constructed out of polyester “grid” fleece. Provides
light insulation for use in mild climates as well as acting as a layer for colder climates. Provides an
increase of surface area for the transportation of moisture away from the wearer during movement.
(2) The top has a zipper that can be used to form a mock turtle neck or allow you to ventilate as
workload increases. The top has holes in the sleeves for the thumbs. Place your thumbs through the
holes to keep the garment down around your wrist.
(3) Wear over lightweight cold weather undershirt and drawers or next to skin.

Level 2: Base Layer
Mid-Weight Cold Weather Shirt and
Drawers
Long sleeve top and full-length bottom

garments constructed out of polyester
‘grid’ fleece
Grid fleece provides an increase of

surface area for transportation of
moisture away from the wearer during
movement
Can be worn next to skin or over Level

1 for additional insulation

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d. (Slide 20) Level 3: Fleece Jacket
(1) Acts as the primary insulation layer for use in moderate to cold climate. “Thermal Pro”, animal fur
mimicking insulation provides an increase in the warmth to weight ratio along with a reduction in volume
when packed.
(2) There are two inner mesh pockets. The zipper will from a mock turtle neck or can be used to
ventilate the garment as required.
(3) Wear underneath shell layers. It is approved for use as an outer layer by the U.S. Army. However, it
offers little protection from the wind and no protection from moisture. The USARAK policy is that (IAW
USARAK Pamphlet 600-2 policy), “(c) The issued Polartec fleece will not be worn as an outer
garment while outdoors.”

Level 3: Insulation Layer
Fleece Jacket is the primary insulation
layer for use in moderate to cold climates.
Thermal Pro, animal fur mimicking

insulation provides an increase in warmth
to weight ratio along with a reduction in
volume when packed.
Not authorized for use as an outer garment

in USARAK.

115
e. (Slide 21) Level 4: Wind Cold Weather Jacket
(1) Made of a lightweight, windproof and water repellant material. Acts as a minimum outer shell layer,
improving the performance of moisture wicking of the insulation layers when combined with Body Armor
and/or Army Combat Uniform.
(2) It has two sleeve pockets, and a mock turtle neck. Two chest level pockets are designed with mesh
pocket linings to aid in ventilation while wearing body armor.
(3) Wear as wind protection during windy cool days.

Level 4: Outer Shell
Wind Cold Weather Jacket is made of a
lightweight, windproof and water
repellant material
Acts as a minimum outer shell layer,

improving the performance of moisture
wicking layers when combined with
Body Armor and/or the ACU

116
f. (Slide 22) Level 5: Soft Shell Cold Weather Jacket and Trousers Outer Shell Layer
(1) Made of a highly water resistant, wind proof material that increases moisture vapor transfer over
current hard shell garments. Provides a reduction in weight, bulk and noise signature during movement.
Increase of breath ability improves performance of insulation layers by decreasing saturation due to
moisture accumulation.
(2) It has a storable hood that works with the ballistic helmet. It has two hand warming pockets on the
chest with mesh lining to aid in ventilation. It has pit zips and two sleeve pockets. Draw cords on the
bottom prevent snow and wind from entering the system.
(3) Wear when the average temperature is below 14º F. You will determine the base and insulation
layers necessary dependent upon temperature, wind and activity level.

Soft Shell Cold Weather Jacket and Trousers
Made of a highly water resistant, wind proof

material that increases moisture vapor transfer
Increase of breathability improves performance

of insulation layers by decreasing saturation
due to moisture vapor accumulation
Provides a reduction in weight, bulk and noise

signature during movement
Best used when temperature is below 14º F.

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g. (Slide 23) Level 6: Extreme Cold/Wet Weather Jacket and Trousers
(1) A waterproof layer for use in prolonged and/or hard rain and cold wet conditions.
(2) It has two pass through chest pockets for ventilation. It has a storable hood that works with the
ballistic helmet.
(3) Wear when the average temperature is above 14º F and alternating between freezing and thawing.
You will determine the base and insulation layers necessary dependent upon temperature, wind and
activity level.

Extreme Cold/Wet Weather Jacket and
Trousers
A waterproof layer for use in prolonged and/or

hard rain and cold wet conditions
Best used when temperatures are above 14º F

and alternating between freezing and thawing

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h. (Slide 24) Level 7: Extreme Cold Weather Parka and Trousers
(1) Provides superior warmth with high compact ability, low weight, and low volume. Highly water
resistant and windproof to provide wind and moisture protection.
(2) Sized to fit over the Body Armor during movement or static activities requiring maximum insulation.
Trouser design incorporates full side zips for donning and doffing over boots and other layers.
(3) Wear in extreme cold weather and climates over all other layers; it is the last layer of protection. It is
meant for static positions.

Extreme Cold Weather Parka and Trousers
Provides superior warmth with low weight,

and low volume
Highly water-resistant and windproof in

order to provide wind and moderate
moisture protection
Sized to fit over body armor
For extreme cold weather climates; the

outer most layer of protection. Meant for
static positions
Learning Step/Activity 11 – Care for ECWCS.
a. (Slide 25) Universal care instructions for all garments (to include MSS)
(1) Before laundering make sure all zippers are zipped and all snaps and hooks are fastened. Tie draw
cords together.
(2) For MSS use front load washing machine.
(3) Machine launder using delicate/gentle fabric cycle or by hand.
(4) Use lukewarm water (90º F) and cold water laundry detergent (i.e. Liquid Tide or Era Plus).
(5) Rinse in clean cold water.
(6) Dry in tumble dryer. Do not exceed temperatures of 130º F as degradation of component materials
will occur. For Level VI, set on permanent press.
(7) Avoid over drying.
(8) To drip dry, place on a rust proof hanger.
(9) Do not press; Do not starch; Do not use fabric softeners; Do not bleach.

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SECTION IV. SUMMARY (Slide 26)
You will be expected to properly wear your issued clothing and equipment for the remainder of the
course.
Check on Learning.
1. What are the three layers that make up the ECWCS?

Base Layer, Insulation Layer, Outer Shell Layer
2. Describe care instructions for ECWCS?

(1) Before laundering make sure all zippers are zipped and all snaps and hooks are fastened. Tie draw
cords together.
(2) For MSS use front load washing machine
(3) Machine launder using delicate/gentle fabric cycle or by hand.
(4) Use lukewarm water (90º F) and cold water laundry detergent
(5) Rinse in clean cold water.
(6) Dry in tumble dryer. Do not exceed temperatures of 130º F as degradation of component materials
will occur. For Level VI, set on permanent press.
(7) Avoid over drying.
(8) To drip dry, place on a rust proof hanger
(9) Do not press; Do not starch; Do not use fabric softeners; Do not bleach
3. At what temperature should you switch from ICWs to VB boots? Where is temperature zone guidance
found?
14 degrees F. USARAK PAM 385-4, Risk Management for Cold Weather Operations
4. Where can you find temperature and uniform guidance for PT?
CG’s Policy Letter #0-08, Cold Weather Physical Training Policy
5. At what temperature should you transition to the Arctic field uniform for PT?
-25 degrees F (including wind chill)
6. Can the fleece jacket be worn as an outer garment in USARAK?

No. Reference USARAK PAM 600-2.

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699-8017: Manage risk during operations in cold regions
Motivator: (Slide 1) In every operation, whether tactical training, combat, or operations other than war,
force protection is essential to success. Historically, the U. S. Army has suffered more losses to
accidents and non-battle related injuries (including fratricide) than to enemy action while deployed in
combat; it appears we are our own worst enemy. Typically, these accidents are the same types
experienced in peacetime, during exercises at home, and at combat training centers. If we can learn
to recognize the hazards that contribute to accidents, we can avoid or reduce the risks from the
hazards.
Composite Risk Management (CRM) is the Army’s principle risk-reduction process to help protect the
force. CRM is a decision making process used to mitigate risks associated with all hazards that have
the potential to injure or kill personnel, damage or destroy equipment, or otherwise impact mission
effectiveness.

ACTION Manage risk during operations in cold regions
CONDITION In a classroom environment and/or under any environmental condition,
given the USARAK Pamphlet 385-4, Risk Management for Cold Weather
Operations
STANDARD Soldier conducted thorough, written risk assessments IAW USARAK PAM
385-4, Risk Management for Cold Weather Operations.
disaster.
Evaluation: You will be tested on your knowledge of cold weather risk management during a one hour
written examination at the conclusion of the course (Refer to training schedule for date/time of exam).
You must score a 70% on the written exam. If you fail the written exam, you will be given a second exam
after re-training has been conducted. If you fail this second examination, you will be dismissed from the
course. You are also expected to conduct a thorough risk assessment for each training event. If you fail to
conduct two risk assessments you may be removed from training as a safety risk (Commandant’s
discretion).
Instructional Lead-In: Composite Risk Management (CRM) is the responsibility of everyone. The
NWTC has produced a pocket guide to allow you to integrate CRM into the planning and execution of
any operation, training or off-duty activity. This block of instruction will introduce you to the CRM
process and allow you to use the NWTC Risk Management Guide for Cold Weather Operations.
During this course, you will have repeated opportunities to use the guide and the CRM process as you
learn about the hazards associated with cold weather operations and the tactics, techniques and
procedures to reduce or eliminate these hazards. By the time you leave this course, the CRM process
should be second nature to you.
Manage risk during operations in cold regions

120
Learning Step/Activity 1 – Familiarize soldiers with risk definitions.
a. (Slide 3) As we get started there are some definitions that need to be considered:
Risk Definitions
• Risk Management- a continuous “step by step” process for
leaders to identify and control hazards, on any mission and
in any environment.
• Risk Assessment- identification and assessment of hazards
• Hazard- any actual or potential condition that can cause
damage to personnel, the mission, or equipment
• Risk- possibility of the hazard occurring, expressed in
terms of probability and severity
• Probability- likelihood that hazard will occur
– Frequent- occurs often, continuously
– Likely- occurs several times
– Occasional- occurs sporadically
– Seldom- remote possibility
– Unlikely- can assume it will not occur
b. (Slide 4) Definitions continued:
Risk Definitions Cont.

• Severity- degree of damage to personnel/
equipment/mission
– Catastrophic- Death, permanent damage, major damage to
equipment, loss of ability to accomplish mission
– Critical- permanent partial disability, major equipment damage,
significantly degraded mission
– Marginal- minor damage to personnel/ equipment, minor
mission degradation
– Negligible- little or no adverse impact on personnel, equipment
or mission
• Risk Level
– Extremely High-loss of ability to accomplish mission
– High- significant degradation of mission capabilities
– Moderate- expected degradation of mission capabilities
– Low- expected losses will have little impact on mission
• Control measures- specific actions taken to reduce hazards
• Residual Risk- level of risk remaining after the controls are
selected

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Learning Step/Activity 2 – Define the Risk Management Process.
(Slide 5) The risk management process is a five step process used to identify and control hazards; risk
management applies to any mission and any environment.
Risk Management Process

1. Identifying threats.
2. Assessing threats to determine risks.
3. Developing controls and making risk decisions.
4. Implementing controls.
5. Supervising and reviewing.

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Learning Step/Activity 3 – Identify the Principles for Applying Risk Management.
a. (Slide 6) These are the basic principles that provide a framework for implementing the risk
management process. Military operations are inherently dangerous by nature. Risk is often related to
gain. So there is going to be a certain level of risk; however, the key is to make a conscious decision to
take that risk once you have put it through the Risk Management process. Do everything you can with
the available time and resources to minimize the risk.
b. Commanders at all levels need to make clear what level of risk is acceptable at their subordinate’s
level and when they should defer it to higher. What level has the authority to make the decision and to
allocate the resources?
Principles for Applying

Risk Management
• No unnecessary risk should ever be taken
• Risk decision must be made at the appropriate
level of command
• Risk is acceptable if potential benefits outweigh
potential costs
• Integrate risk management into planning,
preparation, and execution at all levels.
• Involve the soldiers exposed to the risks.

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Learning Step/Activity 4 – Differentiate between Objective and Subjective Hazards.
a. (Slide 7) Objective Hazards are natural processes that are not influenced by man. Snowstorms,
lightning, temperature extremes, gravity, darkness, wind, rain, fog, avalanches, rock fall, high altitude,
crevasses, cliffs, cornices; all of the impersonal dangers that exist in the cold climates.
b. Subjective Hazards are those that exist because the soldier is unprepared mentally or physically
to meet the challenges that objective hazards present. Often this is a result of ignorance, improper
training, poor judgment, inadequate equipment, poor conditioning, along with overconfidence, false
pride, apprehension or fear. Mission accomplishment is another factor that may cause soldiers to
ignore hazards.
This course focuses on providing tactics, techniques and procedures that will allow you to operate
safely in the cold weather environment. The intent is to make you aware of the hazards that can
conspire to injure or kill you or damage your equipment and give you some ways to mitigate these
hazards to an acceptable level. Remember that these principles apply no matter what environment
you are operating in.
Hazards
Objective hazards:
- natural processes not influenced by man
- snowstorms lightening, temperature extremes,
gravity, darkness, wind, rain, fog, avalanches, rock-
fall, high altitude, crevasses, cliffs, cornices
Subjective hazards:
- exist because the soldier is unprepared mentally,
physically
- often a result of ignorance, improper training, poor
judgement, poor conditioning, along with
overconfidence, false pride, apprehension or fear.

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Learning Step/Activity 5 – Review the USARAK Pamphlet 385-4, Risk Management Guide for Cold
Weather Operations
a. (Slide 8) Note Students should turn to the appropriate section of the book as you narrate.
Turn to Section I. Section I will be discussed in detail during the remainder of this presentation. It is
designed to help leaders assess unit operations.
Section II follows the same format as Section I, but has specific hazards already identified for cold
weather operations. It also has recommended control measures to mitigate these hazards and reduce
the overall risk level for the operation.
Annex A is from FM 5-19. It gives a leader a way to take get a quick snapshot of the overall risk level
for a certain operation. It works by comparing the probability of a certain hazard occurring against the
effects that the hazard will produce to determine overall risk level. For example if the there is a
thunderstorm approaching your unit and you are observing lightening strikes moving closer to your
position and you know that a lightening strike near or on your position will produce catastrophic effects
you know that there is an extremely high risk level associated with continuing operations.
Annex B gives clothing and equipment guidelines for operations in different temperature ranges.
Annex C is a nine line medical evacuation request.
Annex D is the wind chill chart.
Annex E is a diagram that defines the approval authority required to conduct a mission that receives a
Low, Medium, High or Extremely High risk level.
Annex F: This is a diagram of the 5K ski trail at the Black Rapids Training Site. It shows the control
measures that are in place along the trail during the conduct of the 5K snowshoe march and the 10K
ski march in the Cold Weather Leaders Course.
Annex G: Provides blank worksheets for conducting assessments during the course and/or at the unit.
Overview of Risk
Management Guide
Section I: Risk Assessment for Unit Operations
Section II: Cold Weather Skills Worksheets
Annex A: Universal Risk Assessment Matrix
Annex B: Planning Considerations for Cold Weather
Operations
Annex C: Nine Line MEDEVAC request
Annex D: Wind Chill Chart
Annex E: Approval Authority Guidance
Annex F: BRTS Ski March Diagram
Annex G: Risk Assessment for Unit Operations (Blank
Copies)

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Learning Step/Activity 6 – Utilize the five step risk management process for cold weather operations.
a. (Slide 9&10) The first step is to figure out your initial risk level for the operation you are conducting.
You will use the risk assessment matrix and the risk assessment worksheet to accomplish this. Lets
look at the matrix in more detail.
Part I. Identify & Assess

Operational Areas / Conditions
that are Inherently Risky
• Write key mission information pertaining to the
listed operational elements under assessment
criteria.
• Using the Risk Assessment Matrix for Cold
Weather Operations, write the number which
most accurately defines the status of the
operational element in the appropriate risk value
block.
• Total the values and assign an overall risk level
to the operation; move on to PART II...
b. The matrix allows you to take a quick look at many of the areas that typically will increase or
decrease the risk level for a particular mission and it allows you to assign a score for that particular
area.

126
c. (Slide 11) Lets look at each of the charts in detail. Each chart gives a look at a certain element
common to most operations. It allows you to assign a numerical value to each part of the operation. A
low score means less risk. A higher score means greater risk. For example with planning, if you are
given a FRAGO that in one hour you are to conduct a room to room search of a suspected terrorist
hide out, what score would you give on the planning chart. I would say this is minimal preparatory time
and little guidance so this gives a score of 5 (where the Minimal and FRAGO intersect). This is the
highest risk value on this chart. You would circle the number five and write the score in the upper right
hand corner of the box.
Planning
PLANNING
Circle one Risk Value Score:
Preparatory Time
Guidance Optimum Adequate Minimal
FRAGO 3 4 5
OPORD 2 3 4
OPLAN/LOI 1 2 3

127
d. (Slide 12) Mission control is a look at the unit that is conducting the operations (consider unit size,
whether or not there are any attachments, logistical support etc.) and the type of mission being
conducted. Small units tend to function better in a cold weather environment provided they have
training and or experience with cold weather operations. Larger units add to the complexity of a cold
weather operation because of the difficulty of indirect fire support, re-supply and casualty evacuation.
Attachments also add to the complexity and this complexity increases if you have not habitually trained
with these attachments. For attached personnel, you are responsible for providing all logistical
support. For units that are OPCON to you, the parent unit must provide all logistical support.
Mission Control
M IS S IO N C O N T R O L
C ircle o n e R isk V alu e S co re:
T rain in g E ven t
T ask S u p p o rt
O rg an izatio n N o n tactical/ D ay N ig h t
G arriso n T actical T actical
OPCON 3 4 5
A ttach ed 2 3 4
O rg an ic 1 2 3

128
e. (Slide 13) Soldier endurance deals with the fitness level of the individual soldiers in the unit. How
much preparation have they had? This includes training in the particular environment (Norway for
example), cold weather specific training, and any actual experience in the environment (actual
environmental preparation in the area of operation). One note for all of these charts is that this is a
subjective evaluation by you the leader. For example, you may choose to go with the weakest link in
your unit for soldier endurance – a number of soldiers that have just arrived to you unit and have not
yet acclimated and have only received classroom instruction on the dangers of operating in extreme
cold weather. Or, you may choose to go with the majority of your unit that is a well-trained, highly
experienced unit because you feel they can take care of and teach the new soldiers during the
operation. There is no wrong answer.
Soldier Endurance
SOLDIER ENDURANCE
Environmental Soldier Preparation
Preparation Optimum Adequate Minimal

Nonacclimated 3 4 5
Part. Acclimated 2 3 4
Acclimated 1 2 3

129
f. (Slide 14) Soldier selection deals with the relationship between the complexity of the task and the
experience level of the soldier. Cold Weather Indoctrination 1 (CWI1) is classroom and garrison type
cold weather training (eg. platform classes and tent and stove drill rehearsal in the motor pool). CWI2
is ALIT training that takes place in a field environment such as a night in the 10 man Arctic tent at
temperatures below 10 degrees Fahrenheit. Again circle the number and write it in the upper right
hand corner.
Soldier Selection
SOLDIER SELECTION
Soldier Experience
Task Extensive CWI/2/ CWI/1 No MOS

CW Some CW CW Qualified
Exposure Exposure Exposure No CW
Trng
Complex 3 4 5 6
Routine 2 3 4 5
Simple 1 2 3 4
g. (Slide 15) Weather measures the duration of exposure to the current and anticipated conditions.
Use the wind chill chart to help determine the temperature range.
Weather
WEATHER
Temperature (F) Exposure Duration
(Spec. conditions) <8 hrs 8-24 hrs 24-72 hrs >72 hrs
55 to 33 1 1 2 3
32 to 10 2 2 3 4
9 to -19 3 4 4 5
-20 to -40 5 6 7 8
Below -40 6 7 8 9
Blizzard, ice fog 6 7 8 9
Snowstorm, whiteout

130
h. (Slide 16) Use the wind chill chart to help determine the temperature range.
Wind Chill Chart

WIND
SPEED 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35 -40 -45
5 36 31 25 19 13 7 1 -5 -11 -16 -22 -28 -34 -40 -46 -52 -57 -63
10 34 27 21 15 9 3 -4 -10 -16 -22 -28 -35 -41 -47 -53 -59 -66 -72
15 32 25 19 13 6 0 -7 -13 -19 -26 -32 -39 -45 -51 -58 -64 -71 -77
20 30 24 17 11 4 -2 -9 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81
25 29 23 16 9 3 -4 -11 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -84
30 28 22 15 8 1 -5 -12 -19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87
35 28 21 14 7 0 -7 -14 -21 -27 -34 -41 -48 -55 -62 -69 -76 -82 -89
40 27 20 13 6 -1 -8 -15 -22 -29 -36 -43 -50 -57 -64 -71 -78 -84 -91
45 26 19 12 5 -2 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -86 -93
50 26 19 12 4 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 -88 -95
WCT (°F) = 35.74 + 0.6215T - 35.75(V0.16) + 0.4275T(V0.16)

Where T is temperature (°F) and V is wind speed (mph)
i. (Slide 17) Terrain is a look at the difficulty of the terrain versus the objective hazards present in the
area.
Terrain
TERRAIN
Trafficability
Terrain Type Improved Secondary Trail/Cross
Country
*Mountain 3 4 5
Hills 2 3 4
Flat/Rolling 1 2 3
*Snow avalanche hazards will often threaten operations; special risk assessment and
rescue training required

131
j. (Slide 18) Rest and maintenance gives an overall picture of the health of the unit. Has equipment
been maintained recently or have continuous operations degraded the capability of mission essential
equipment? How much rest have the soldiers in the unit been able to get? Consider the leaders as
they tend to get less rest than the soldiers.
Rest and Maintenance

REST AND MAINTENANCE
Personal Equipment Status
Rest Optimum Adequate Minimal
<4 hrs (in 24 hrs) 3 4 5
8 hrs (in 24 hrs) 2 3 4
>8 hrs (in 24 hrs) 1 2 3
k. (Slide 19) Now we will determine the initial risk level, by recording the information from the matrix and
any other pertinent information in the chart below. This is our initial risk level only. You have not
implemented any control measures or made any decisions as to how you will perform the mission to
reduce the risk level.
RISK ASSESSMENT WORKSHEET FOR COLD WEATHER

OPERATIONS
PART I. Identify & Assess Operational Areas / Conditions that are Inherently Risky.
Write key mission information pertaining to the listed operational elements under assessment criteria. Using the Risk
Assessment Matrix for Cold Weather Operations (preceding page), write the number which most accurately defines the status
of the operational element in the appropriate risk value block. Total the values and assign an overall risk level to the
operation; move on to PART II...
ELEMENT ASSESSMENT CRITERIA RISK VALUE

Planning
Mission Control
Soldier
Endurance
Soldier
Selection
Weather
Terrain
Rest &
Maintenance
OVERALL RISK LEVEL: TOTAL: ________

132
l. (Slide 20) Part II Assess threats to determine risks.
Now we will assess the specific hazards associated with the operation. You may be conducting a
15 kilometer mountain patrol. The route requires a river crossing early in the movement. Hypothermia
is an obvious specific hazard for this operation. If the temperatures are 40 degrees and it is raining
there is a high likelihood that Soldiers will become hypothermic.
Part II. Assessing threats to

determine risks
• Assess the specific hazards associated with risky
elements of this operation.
• Determine an accurate risk level for each specific
hazard by answering these two questions:
- What is the likelihood of a mishap?
- What degree of injury or equipment damage is
possible?
The Universal Risk Assessment Matrix (Annex A)

describes the various risk levels in detail.

133
m. (Slide 21) PART III. DEVELOP CONTROL MEASURES & RE-ASSESS THE OVERALL RISK
LEVEL OF THE OPERATION
Next, identify control measures you will implement to minimize (or eliminate) the risks
associated with these hazards. The Planning Considerations for Cold Weather Operations guide
(Annex B) describes many of the mission essentials to consider when operating in cold environments.
Re-assess the risk level of these hazards. If the control measures are implemented, will the
probability and/or severity of potential accidents be reduced? Lower risk levels resulting from the
integration of proper control measures into the operation are referred to as residual risk levels ...
write these in their corresponding blocks.
The overall risk level for the mission is now determined by the most serious remaining
residual risk level. See Appendix E for Approval Authority Guidance for residual risk level. If initial risk
level is medium, high or extremely high, brief risk decision authority at that level on controls and
countermeasure used to reduce risks. (Signature indicates that the appropriate risk decision
authority was briefed of the initial risk level, control measures taken and appropriate resources
requested). Extremely high risk operations, where the consequences of a mishap will in all likelihood
be catastrophic, require the closest scrutiny. Maximum involvement of key leaders at all pertinent
command levels is essential; mission benefits must be critical enough to outweigh the extreme risk
factor.
PART III. Develop Control Measures & Re-

assess the Overall Risk Level of the Operation
• Identify control measures you will implement to minimize (or
eliminate) the risks associated with these hazards.
• Re-assess the risk level of these hazards. The Planning

Considerations for Cold Weather Operations guide (Annex B)
describes many of the mission essentials to consider when
operating in cold environments.
• The overall risk level for the mission is now determined by the most
serious remaining residual risk level.
• See Annex E for Approval Authority Guidance for residual risk level.

134
n. (Slide 22) PART IV. IMPLEMENT CONTROLS
The procedures for controlling risk must be integrated into plans, orders, standing operating
procedures, written and verbal orders, preliminary training, and through other channels that ensure
the procedures will be effectively used during the actual operation. Implementation involves the entire
chain of leadership as a team, assuring that the full range of approved operational risk controls are in
place and ready to go.
Part IV. Implement Controls

• The procedures for controlling risk must be
integrated into plans, orders, standing operating
procedures, written and verbal orders,
preliminary training, and through other channels
that ensure the procedures will be effectively
used during the actual operation.
• Implementation involves the entire chain of

leadership as a team, assuring that the full range
of approved operational risk controls are in
place and ready to go.

135
o. (Slide 23) PART V. SUPERVISE AND EVALUATE
The leader uses the same supervision techniques (on-the-scene, spot check, performance
indicators) to monitor risk controls that are used to monitor overall operations. Continually assess
operational risks and evaluate results, including the effectiveness of risk-management controls.
Part V. Supervise And Evaluate

• The leader uses the same supervision
techniques (on-the-scene, spot check,
performance indicators) to monitor risk controls
that are used to monitor overall operations.
• Continually assess operational risks and

evaluate results, including the effectiveness of
risk-management controls.
• Information for steps I-V should be recorded on

the Risk Management Worksheet.
p. (Side 24) The entire process is recorded on the DA Form 7566, April 2005. This is briefed to
higher and the approval authority signs off in Block 15.
1. Organization and Unit 2. Page ____ of _____
3. Mission/Task 4. Date/Time Group 5. Date Prepared:

Begin:
End:
6. Prepared by: (rank, name, duty position)
7. Operational phase in which the mission/task will be conducted:
8. Identified Hazards 9. Assess the 10. Develop Control Measures for Identified 11. Make Risk 12. How to Implement Controls: 13. Supervision and
Hazards: Hazards: Decisions: Include SOPs, references, evaluation by:
Initial Risks: Specific measures taken to reduce the Remaining risks: written and verbal orders, etc. Continuous leader
probability and severity of a hazard checks, buddy system,
situation reports, etc.
L M H E L M H E
14. Remaining Risk Level After Countermeasures are Implemented: (circle one)
LOW (L) MEDIUM (M) HIGH (H) EXTREMELY HIGH (E)
15. Risk Decision Authority Level: (approval authority signature block)

If initial risk level is medium, high or extremely high, brief risk decision authority at that level on controls and countermeasure used to reduce risks. (Signature indicates that the
appropriate risk decision authority was briefed of the initial risk level, control measures taken and appropriate resources requested).

136
q. (Slide 25) This chart explains what risk level both a single numeric value and the cumulative score
will give (remember you must check both); it also identifies the level of command necessary to clear
the training at each risk level. Note the levels of command that must approve a high risk or extreme
high risk operation prior to execution (as per USARAK 350-1).
Quick Reference Guide

Risk Level Low Medium High* Extreme**
Numeric Value 1,2 3,4 5,6 7,8,9
Cumulative 7 – 12 13 –23 24-35 36-40

Score
General Company Battalion Brigade; major Major
Clearance Level Commander Commander subordinate subordinate
Guidelines command command;
commander major
command
commander
*High risk operations require coordination with the next higher level of
command external to the organization making the assessment.
**Extremely high risk operations require the closest scrutiny. If an area
receives a 7 or higher value, the overall rating is extreme risk.
Learning Step/Activity 7 – Conduct Initial Risk Assessment Practical Exercise 1.
a. (Slide 26) Note: Give soldiers about 7 minutes to work through the scenario.
Scenario 1
You are a light infantry bn. rifle platoon leader with a platoon currently at full
strength. You have just been tasked by your company commander to prepare
your soldiers for an OPFOR mission and have been provided with a detailed LOI.
In 72 hrs. you will depart by vehicle for training area 4A and prepare a hasty
defense. Area 4A is generally flat with moderate to heavy forests typical of the
terrain surrounding your post, Ft. Freezomo, AK. You will have 12 hrs. upon
arrival to prepare positions. You will be required to occupy the positions with 1/3
of your soldiers at all times. You will not be allowed to have any warming fires or
stoves at the positions. Co. A will conduct an assault on your position at 0800
hrs. the following day. After A Co. seizes the objective, vehicles will arrive to
move everyone back to garrison. The AAR will be conducted in the rear. It is
November 18th and currently snowing hard at a temperature of about 26°F. In
two days the weather is expected to clear with temperatures falling to between -
30° and -40° for the first time this year.
You have served as 1st plt. leader since last April, however this will be your first
winter exercise. All of your squad leaders and the plt. sergeant have served at
least one previous winter in the unit, though only one was in 1st plt. last winter.
One third of your soldiers are relatively new and have not experienced a winter
training cycle, however they all have received classroom instruction on
prevention of cold weather injuries and maintenance of equipment in the cold.
The remainder of your soldiers either served in the platoon the previous winter or
have received winter training at their previous unit. This past week, you
conducted an inventory of your winter equipment (ahkio groups, snowshoes, etc.)
and everything appears to be in order. You have three full days to prepare for
the task.

137
b. (Slide 27) Here is what I came up with for an initial risk assessment:
MISSION: OPFOR Defense UNIT: Infantry platoon

DATE/TIME:
LOCATION: Ft. Freezomo, AK TERRAIN DESCRIPTION: Heavy forests and
unimproved road to position
Assessment Matrix for Cold Weather Operations (preceding page), write the number which most accurately defines the status of the
operational element in the appropriate risk value block. Total the values and assign an overall risk level to the operation; move on to
PART II...
ELEMENT ASSESSMENT CRITERIA RISK

VALUE
Planning LOI, 72 hours 1
Mission Control Organic, Night Tactical 3
Soldier Non-Acclimated, Optimum 3
Endurance
Soldier Routine, some CW exposure 4

Selection
Weather -30 - -40F; 8-24 hours 6
Terrain Flat; secondary roads 2
Rest & About 8 hours; adequate 2
Maintenance
OVERALL RISK LEVEL: High TOTAL: 21__

138
c. (Slide 28) Here are steps 2-5…
1. Organization and Unit: Infantry Platoon 2. Page __1__ of __1__
3. Mission/Task: OPFOR Defense 4. Date/Time Group 5. Date Prepared:

Begin:
End:
6. Prepared by: (rank, name, duty position) LT. BULLWINKLE
7. Operational phase in which the mission/task will be conducted:
8. Identified Hazards 9. Assess the 10. Develop Control Measures for 11. Make Risk 12. How to Implement 13. Supervision and
Hazards: Identified Hazards: Decisions: Controls: evaluation by:
Initial Risks: Specific measures taken to reduce Remaining risks: Include SOPs, references, Continuous leader
the probability and severity of a written and verbal orders, checks, buddy
hazard etc. system, situation
reports, etc.
L M H E L M H E
Cold Weather H Temperature Zone IV guidelines for M PCC/PCIs of cold weather Medical personnel
Injuries clothing and equipment clothing; adequate number conduct frequent
of tents with operational checks of personnel
Tent and Stoves erected behind stoves and adequate fuel; to mitigate problems
positions; 1/3 force man’s positions, Tent and Stove Drill before they become
2/3 force in heated tent’s; rotate rehearsed; guidelines from casualties
soldiers every 30 minutes from USARAK Pamphlet 385-4
positions to warming shelters; ensure utilized for Tent & Stove Buddy up
adequate fuel operations experienced
personnel with new
Squad Leaders/Team troops
Leaders ensure rotation
from positions to shelters;
buddy checks; medic
conducts checks of soldiers
returning to shelters;
PL/PSG supervise and
ensure they are part of the
rotation to heated shelters
14. Remaining Risk Level After Countermeasures are Implemented: (circle one) Battalion Commander
15. Risk Decision Authority Level: (approval authority signature block) Battalion Commander _____________________________________
If initial risk level is medium, high or extremely high, brief risk decision authority at that level on controls and countermeasure used to reduce risks. (Signature
indicates that the appropriate risk decision authority was briefed of the initial risk level, control measures taken and appropriate resources requested).

139
Learning Step/Activity 11 – Conduct Risk Assessment Practical Exercise 2.
a. (Slide 29) Note: Give soldiers about 10 minutes to work through the scenario.
Scenario 2
You are the commander of Co. B, 2/287 INF (light) and are currently participating in
Operation Arctic Warlord, a major NATO winter exercise in northern Norway
designed to measure your unit’s war fighting capabilities on a cold, snow covered
battlefield. Your company completed a forced ski march about 6 hrs. ago and is
now finishing up the last maintenance tasks for the day. The troops did very well
on the march, arriving in the new area of operation a full hour ahead of the rest of
the battalion. It appears your pre-exercise training back at Ft. Freezomo has paid
off. Your soldiers have been eating and drinking well, but some appear to be a little
run down from the march. It is now 2030 hrs. At 2300 (about two hours after
racking out) you are wakened by the Bn. commander and told Co. B must be
prepared to move out at 0900. You have been tasked to help 1st Bn. secure an
airfield 3 km away. He gives you a brief order defining the situation. You will
depart on skis and move x/country linking up with 1st Bn. just south of the airfield.
From there you will take all orders from 1st Bn. commander until you are relieved
by another unit the following day. You must provide your own food, ammo, and
other mission essentials, however your ahkios will be sent forward by SUSV later in
the day.
Though you don’t relish the tasking, you know your soldiers have been eager to
prove themselves during the exercise and will handle the mission well. You are
fortunate that Co. B is full of highly qualified, cold weather warriors who have been
training in these -20° to -30°F temperatures since the beginning of last month. You
decide the troops can sleep until 0500; 4 hrs. will be sufficient time to prepare for
the mission. The temperature is expected to rise about 20 degrees by morning,
however the winds are also expected to pickup within the next six hours, gusting up
to 20 mph. The terrain from your present location to the airfield is relatively flat with
much barren ground and very few trees.
b. (Slide 30) Here is what I came up with for an initial risk assessment
MISSION: Operation Arctic Warlord Move to and Conduct Link-up to secure airfield
UNIT: B Co 2/287 IN
DATE/TIME:
LOCATION: Norway TERRAIN DESCRIPTION: Flat, few trees
Assessment Matrix for Cold Weather Operations (preceding page), write the number which most accurately defines the status of the
operational element in the appropriate risk value block. Total the values and assign an overall risk level to the operation; move on to
PART II...
ELEMENT ASSESSMENT CRITERIA RISK

VALUE
Planning FRAGO; adequate 4
Mission Control OPCON; night tactical 5
Soldier Acclimated; adequate 2
Endurance
Soldier Complex; highly qualifed 3

Selection
Weather Wind Chill to -35 F; 8-24 hours 6
Terrain Flat; cross country 3
Rest & About 6 hours; adequate 3
Maintenance
OVERALL RISK LEVEL: High TOTAL: 26__

140
c. (Slide 31) Here is what I came up with for steps 2-5:
1. Organization and Unit: Infantry Company 2. Page __1__ of __1__
3. Mission/Task: Operation Arctic Warlord Move to and Conduct Link- 4. Date/Time Group 5. Date Prepared:
Begin: 0500
up to secure airfield End: 1500
6. Prepared by: (rank, name, duty position) CPT WHO
7. Operational phase in which the mission/task will be conducted: Operation Arctic Warlord
8. Identified Hazards 9. Assess the 10. Develop Control Measures for 11. Make Risk 12. How to Implement 13. Supervision and
Hazards: Identified Hazards: Decisions: Controls: evaluation by:
Initial Risks: Specific measures taken to reduce Remaining risks: Include SOPs, references, Continuous leader
the probability and severity of a written and verbal orders, checks, buddy
hazard etc. system, situation
reports, etc.
L M H E L M H E
Cold Weather H Temperature Zone IV guidelines for M PCC/PCIs of cold weather Medical personnel
Injuries clothing and equipment clothing; equipment checks conduct frequent
of skis and bindings; checks of personnel
All soldiers start movement cool; 1 rehearsals of movement to mitigate problems
ahkio group per platoon; stripped of procedures and actions at before they become
all but tent and stove equipment; halts; halts are less than casualties
rehearse link-up procedures to with 10 minutes to prevent
1st battalion to prevent soldiers from soldiers from becoming Buddy up
becoming static at completion of chilled experienced
movement; soldier load no more than Tent and Stove Drill personnel with new
40 pounds (sleeping bags carried); rehearsed; guidelines from troops
remainder of equipment brought USARAK Pamphlet 385-4
forward by SUSV; trail breaking utilized for Tent & Stove
element moves one hour prior, operations;
establishes and marks trail; slow rate medic conducts checks of
of march for all soldiers top prevent soldiers at established
overheating checkpoints; potential cold
weather injuries are dealt
with immediately
14. Remaining Risk Level After Countermeasures are Implemented: (circle one) Battalion Commander
15. Risk Decision Authority Level: (approval authority signature block) Battalion Commander _____________________________________
If initial risk level is medium, high or extremely high, brief risk decision authority at that level on controls and countermeasure used to reduce risks. (Signature
indicates that the appropriate risk decision authority was briefed of the initial risk level, control measures taken and appropriate resources requested).
Final Thoughts
• Remember:
– Implement the controls
– Supervise and evaluate
• Risk Management is not an event, it is a
continuous process.
• There is no approved solution or textbook
answer. You as a leader must be willing to take
responsibility for your risk assessment.
• The process should become second nature,
muscle memory, reflexive.
• Put tangible meaning to your risk assessment

141
You are required to develop a written risk assessment for all outdoor related training for the rest of this
course. You may be called upon by your squad instructor to brief this risk assessment to the squad. This
will get you into the habit of assessing risk for all training and operations.
Check on Learning.
1. What are the five steps to the risk management process?

Identifying threats, assessing threats to determine risks, developing controls and making risk decisions,
implementing controls, supervising and reviewing.
2. For a HIGH risk operation, who must approve the mission?

The first 0-6 in the chain of command.

142
699-8012: Plan for over snow movement
Motivator: During the Russo Finnish war of 1939-1940 the Finns were vastly outmanned and outgunned.
Battalions were led by Captains, Divisions sometimes led by Colonels. Their artillery was from the
previous century. They had a very small and outdated air force. The Russians threw 26 Divisions at a
force of just 9 Finnish Divisions. Besides fighting on their home ground the Finns had a major advantage
over the Russians: they could move on the snow and could live in it. The Finn army was free to maneuver
where and when it pleased because they were on skis and did not depend on vehicles to move them or
their supplies. They allowed the Russians to have the road network, while building their own trails through
the forest. The Russians depended on trucks and horses while the Finns used sleds and native reindeer.
The Finns would ski 20-30 kilometers a night to encircle and cutoff the Russians. In one battle,
Suomussalmi, two Russian divisions totaling more than 48,000 men and 100 tanks were destroyed in
detail by a Finn force of less than 17,000 with no tanks. In the end the Russians won only by sheer
numbers and still only took less than half of Finland. One Russian General was quoted as saying”… we
have won enough ground to bury our dead…”
Planning
Considerations for
Over Snow
Movement

ACTION Plan for over snow movement
CONDITION In a snow covered field environment
STANDARD Soldier planned a 5km movement for a squad sized element over snow
covered terrain with a solution plus or minus one hour.
disaster.
Plan for over snow movement

143
Evaluation: You will be tested on your knowledge of planning considerations for over snow movement
be dismissed from the course. In addition to the written test, you will conduct a written practical exercise.
Instructional Lead-In: This lesson will give you some basic planning considerations for moving small
units over snow covered terrain.

144
Learning step/Activity 1 - Identify the advantages / disadvantages of wheeled, tracked, and over-snow
vehicles for movement over deep snow or steep terrain.
a. (Slide 3) There are several different modes of travel on snow. Over the next few slides we will discuss
a few. The most preferred method of movement in a snow covered environment is a helicopter. However
air mobility has its limitations, one of those being maintenance. It also suffers from periods of reduced
visibility due to the lack of daylight and blizzard conditions associated with this type of environment.
Altitude will also lessen the capability of helicopters. Troop compartments in aircraft should be kept cool
to prevent Soldiers dressed for cold weather operations from sweating profusely during air movements.

145
b. (Slide 4) Another method of travel is wheeled vehicles. Wheeled vehicles have their drawbacks due to
maintenance and their severe inability to move off-road. In Alaska there are only about 14,000 miles of
roads, of these 2,500 are paved and in the winter only about 60% are passable. These conditions are
similar in other cold regions throughout the world.
c. (Slide 5) An alternative type of transportation, is the snow machine. It can travel over almost any type
of snow covered terrain. The drawback to a snow machine is the number of personnel it can carry. It is
best suited to scout units and re-supply operations. It can skijor up to 3 personnel. Planning radius of a
snow machine is approximately 40 miles.

146
d. (Slide 6) The last type of transportation for maneuver elements is the M973 Small Unit Support
Vehicle (SUSV).Being a tracked vehicle it will go places that wheeled vehicles will not. The SUSV is
commonly used in support of maneuver elements due to its lack of armor. The SUSV can move 180 miles
on a full tank of fuel. It can carry up to 13 soldiers depending on the configuration of the front
compartment. The SUSV can also skijor up to 30 personnel depending on the length of rope in use.
M973 Small Unit Support

Vehicle

147
Learning step/Activity 2 - Identify the advantages/disadvantages of snow-shoeing, skiing, sled (ahkio)
hauling, and skijoring.
a. (Slide 7) All motorized transportation has limitations. Individual over snow movement techniques are
the most reliable form of transportation in cold regions. You should understand the three major individual
movement techniques (skiing, snowshoeing and skijoring), the planning considerations for each of them,
and the advantages and disadvantages of each. Later in the course you will have the opportunity to
develop each of these techniques. This will allow you to develop a training plan at your unit that will allow
you to meet training objectives in the field. For infantry soldiers, snowshoeing should be considered the
minimum skill that all soldiers in the unit posses.
Individual Movement
Techniques
• Skiing
• Snowshoeing
• Skijoring

148
b. Skiing. (Slide 8) Skiing is harder to learn than snowshoeing but requires less work when mastered.
You don’t need to pick your feet up or walk with your legs farther apart than normal. Even on flat or
moderate uphill sections, a properly trained skier soldier will be able to glide; on downhill sections the
soldier will have very little physical work to do.
Use Skis When...

• Long distances must be traveled
• Stealth is necessary
• Conditions allow
c. (Slide 9&10) This is an overview of what you will learn later in the course and this is the training that
you should provide to your Soldiers. These lessons have been adapted from the PSIA manual. They are
a guideline for you to provide training to your soldiers, should you determine that ski techniques are
needed for your unit. As an alternative, the cross country techniques can be taught to soldiers and
utilized for physical training during the winter months. This puts soldiers outdoors during the winter
months for PT and additionally teaches them to deal with the cold and trust their cold weather clothing
and equipment.
Military Skiing
Military skiing:
• is generally done on flat or rolling terrain that
requires the use of cross-country (Nordic) skills.
• may require skiing down steep slopes using
downhill (Alpine) skills.
• presents a major training challenge because of
the time it takes to train Soldiers to be proficient
on skis.
• is divided into seven ski lessons.
• is an excellent alternative means of conducting
physical training in winter
• is an excellent means to giving Soldiers practical
experience dealing with the cold weather
environment 9

149
Military Ski Lessons
Ski Lesson 1: Nomenclature, Maintenance, Fitting,
Introduction to Movement on Skis
Ski Lesson 2: Hill Climbing and Gentle Descents
Ski Lesson 3: Basic Cross-Country
Ski Lesson 4: Wedge Turns; Intermediate Cross-
Country
Ski Lesson 5: Basic Nordic Downhill
Ski Lesson 6: Intermediate Nordic Downhill, and
Advanced Cross-Country
Ski Lesson 7: Advanced Nordic Downhill
10
d. Skijoring. (Slide 11&12) Skijoring is a method of pulling individuals on skis with a snow machine or
SUSV. It takes very little energy to hold onto the rope and be pulled along. Skijoring by SUSV can move
up to 30 soldiers at a time. ENSURE ALL EXPOSED SKIN IS COVERED! Things to remember – Just
because a soldier has had 40 hours of ski training, does not mean he/she should be allowed to skijor –
there still may be soldiers that are not proficient enough to attempt skijoring. During training events, a
written risk assessment is mandatory.
Skijoring
• is a technique that uses a vehicle to tow skiers
• requires a minimum of 40 hours of ski training
prior to skijoring; Soldier must be proficient on
skis
• requires a written risk assessment by the
commander
• generally uses SUSV or snow machine
• vehicle speed is limited to 15 miles per hour
• all skin must be covered; goggles are required
• for SUSV, a spotter is used to observe skijoring
personnel
• spotter must have communication with driver
11

150
e. Snowshoeing (Slide 13) Snowshoeing is easy to learn, however snowshoeing requires more physical
effort than skiing or skijoring. Snowshoeing still requires less effort than post holing without any flotation
in deep snow. When you walk on snowshoes you have to pick your feet up and walk with your legs
farther apart than normal due to the width of the snowshoe. Because of their size snowshoes are easier
to maneuver through heavy brush. Their ease of use also makes them better suited for rough terrain.
Use Snowshoes When...
• Moving through heavy brush
• Terrain is rough
• Troops are not proficient with skis
14
f. (Slide 14) This is an overview of snowshoe training. Hands on training is provided later in the course.
Snowshoeing
Have soldiers move over snow covered terrain:
• The feet are kept apart slightly wider than normal to prevent
stepping on or catching the other snowshoe.
• The toe of the snowshoe is raised just high enough with each step
to clear the snow as the tail slides over it.
• On flat and gentle slopes ascent is made by climbing straight

uphill
• Steeper terrain is ascended by traversing and packing a level trail

similar to a creating a shelf across it.
• Ski poles may be used as an aid to balance, especially when

carrying heavy loads and/or moving uphill.
• Movements
– Walking
– Step turn
– Kick turn
– Negotiate obstacles
15

151
Learning Step/Activity 3 - Identify route planning considerations for over snow movement.
a. General considerations. (Slide 15) In addition to the normal considerations regarding the tactical
situation leaders must take into account the following when selecting a route across cold/snow-covered
terrain:
(1) Conduct a map reconnaissance. Going around terrain features may be faster than going over
them; check the contour, and select a route which involves the minimum amount of ascending and
descending.
(2) Are your personnel on skis or snowshoes? How proficient are they, and are they more capable of
negotiating the terrain along the route with one or the other?
(3) Will your soldiers be carrying heavy rucksacks or pulling sleds? What will the temperatures be
during movement?
(4) Do you have any vehicles attached, and if so, what type of terrain/snow depth are they capable of
negotiating?
(5) How will you camouflage your tracks? Do you need to? In barren areas, or areas above the tree
line tracks may be difficult if not impossible to conceal.
(6) Will the route be feasible during conditions of limited visibility?
(7) Will the route cross any potential avalanche areas?
(8) What obstacles can be anticipated? Will streams and other bodies of water be sufficiently frozen to
support troops/vehicles? Will plowed roads perpendicular to your route have high banks of plowed snow?
Will the water level in streams be so low that your soldiers will have to negotiate high banks?
Route Planning Considerations

In addition to the tactical situation consider:
• Map recon for route selection; feasibility

of route during limited visibility
• Movement technique (skis, snowshoe, foot)
• Soldiers Load
• Use of vehicles
• Terrain and Weather
16

152
b. Open terrain. (Slide 16) In open terrain you want to break only one set of tracks. Aircraft flying over
can more easily spot several tracks than they can a single set of tracks. Follow the tree line as much as
possible, this will aid in concealment from the ground as well as help hide your tracks from the air.
Route Planning
Considerations: Open Terrain
• Break only one set of tracks
• Follow tree lines/natural terrain
features
17
c. Hill or mountain terrain. (Slide 17) When negotiating hills or mountains use gentle traverses to ascend
or descend. This makes it less fatiguing on your soldiers so they will be able to fight when they reach the
objective. As far as avalanche prone slopes are concerned avoid them at all costs. Very specialized
training is required to even come close to negotiating them safely. During the avalanche awareness class
you will learn some warning signs to be aware of in snow covered mountainous terrain.
Route Planning Considerations:

Hills / Mountains
• Use gentle traverse to ascend or
descend
• Follow contours once elevation is
gained
• Avalanche considerations
18

153
d. Water routes. (Slide 18) Water routes are generally excellent for navigation. They can be superb
avenues for movement during freeze-up. However you must physically check the ice thickness by cutting
a hole and measuring it. When you move on water routes treat them as an open area and stay close to
the shore. Again this will help to conceal you and your tracks. Overflow is a condition common to most
bodies of water where the water flows onto the ice.

Water Routes
• Generally excellent for navigation
• Check ice thickness
• Stay close to shore or bank
• Overflow
19

154
e. (Slide 19) This chart show ice depth thickness required for different modes of travel.
Note: Rule of thumb for armored vehicles: 16 inches of waterborne ice support 16 tons, and each
additional inch supports one additional ton. This does not apply for ice thicknesses under 16 inches. For
example three inches of ice will not support three tons.
If ice is not supported by water (waterborne) because the water level has dropped, it will be too weak to
support heavy loads.
In temperatures above 14º F, add 25% to all required ice thickness’.
Load Bearing Capacity of Fresh Water Ice

Minimum Ice Thickness (Waterborne)
Load Minimum One Normal Distance

Time Only Repeated Use Between Units
Soldier on skis 1.5 inches 2 inches 5 meters
Soldier on foot 3 inches 4 inches 5 meters
¼ ton truck 5 inches 8 inches 16 meters
HMMV 10 inches 13 inches 27 meters
SUSV 10 inches 13 inches 27 meters
UH-60/CH-47 15 inches 18 inches 80 meters

19

155
f. Night movements. (Slide 20) Almost everybody has conducted some sort of night movement. You all
know about breaks in contact and how long it can take to regain contact and continue movement. In
temperate regions this is usually an annoyance that slows movement. In the cold weather environment,
long halts can produce cold weather injuries. Due to this fact, the route should follow the easiest terrain
possible. The route should also be well marked and guides placed where appropriate. Maximize the use
of reconnaissance teams and well defined travel lanes and checkpoints. Reconnaissance teams may
also be tasked to put up heated shelters along longer routes.

Night Movement
• Breaks in contact and long halts can cause
cold weather injuries
• Route must follow easiest possible terrain
• Route must be well marked
20
Learning Step/Activity-4 Identify trail breaking procedures.
a. (Slide 21)
Trail breaking on
skis/snowshoes
• can take considerable effort; personnel must
be rotated out frequently
• second Soldier does not step in leaders
footprints; helps flatten trail
• third and fourth Soldiers help widen trail by
off-setting left and right
21

156
Learning Step/Activity 5 - Plan movement rates over snow covered terrain.
(Slide 24)
Planning Rates
of March
24

157
a. Planning rates of movement
(1) (Slide 25) The normal planning rate for troops on hard packed, gently rolling terrain is 4 km per
hour. When you add snow or hilly terrain in there is a formula to help you judge the rate of march.
(2) You will notice looking at this table that the movement rate of foot with less than 1 foot of snow is
the same as on snowshoes with more than 1 foot of snow. What this means is unless you have more than
1 foot of snow snowshoes are not necessary. You will also notice that skis are shown to be faster than
snowshoes, this is due to the fact that they require less work to use. Finally skijoring doesn’t show a time
for an unbroken trail, this is because you are behind a vehicle and it is breaking trail for you.
Movement Mode and Speed

Movement Mode Unbroken Trail Broken Trail
On foot- 1.5 to 3 kph 2 to 3 kph
less than one foot of snow
On foot- .5 to 1 kph 2 to 3 kph
more than one foot of snow
Snow Shoeing 1.5 to 3 kph 3 to 4 kph
Skiing 1.5 to 5 kph 5 to 6 kph
Skijoring N/A 8 to 24 kph
(expected rates of march for troops carrying rucksacks over gently rolling terrain)
25
(3) (Slide 26) Now let’s take a look at the effects of terrain on movement. When you gain elevation you
must add 1 hour for every 1000ft you move up. This takes into account the extra time required to traverse
and the more frequent halts that will be required. Moving downhill you will have to add 1 hour for every
1600ft you move. This is generally accepted for foot or snowshoe movement; proficient skiers will take
significantly less time to move downhill. More injuries occur descending than ascending. These injuries
are normally lower leg injuries.

158
Effects of Terrain Angle on
Speed
Uphill-
Add 1 hour for every 1000 foot increase in elevation
Downhill-
Add 1 hour for every 1600 foot decrease in elevation
26
(4) (Slide 27) Use the information presented above to plan your movement:
NOTE: Give students about 10 minutes to plan.
Practical Exercise
Your mission is to conduct a deliberate
attack. The distance from your LD to assault
position is 5 km.
Your route follows a unbroken trail crossing
two ridge lines. The first is 550 feet above
the surrounding terrain; the second is 450
feet.
There are 18 inches of snow on the ground.
Your troops are proficient on snow shoes but
not on skis.
27

159
(Slide 28) NOTE: This slide is for use during the exercise.
Movement Mode Unbroken Trail Broken Trail

On foot- 1.5 to 3 kph 2 to 3 kph
less than one foot of snow
On foot- .5 to 1 kph 2 to 3 kph
more than one foot of snow
Snow Shoeing 1.5 to 3 kph 3 to 4 kph
Skiing 1.5 to 5 kph 5 to 6 kph
Skijoring N/A 8 to 24 kph
Uphill – add 1 hour for every 1000 foot increase in elevation
Downhill – add 1 hour for every 1600 foot decrease in elevation

26
(5) (Slide 29) PE solution
• Terrain Effect:
o You ascend a total of 1,000 feet so add one hour.
o You descend 1,000 feet so add 40 minutes.
o This gives you a total time of 1 hr and 40 minutes just for the terrain effects.
Ascend total of 1,000 feet: Add 1 hour

Descend total of 1,000 feet: Add 40 minutes
Total time for terrain factor: 1 hour 40 minutes
30

160
(Slide 30) We used a planning figure of 1.5km per hour. This gives a total of 3 hours and 20 minutes for
the 5km. Add the time for the 5km, (3 hours 20 minutes) to the time for terrain effects (1 hour 40 minutes)
this gives you a total time of 5 hours to move 5 km, whereas on hard packed, gentle terrain it would have
taken 1 hour 15 minutes.
PE Solution
• 5K on 18 inches of new snow on snowshoes
3 hours and 20 minutes (1.5km/hr) +
• "Terrain factor" - (effect of hills)

1 hour and 40 minutes
= 5 hours
31

161
You now know how to plan a unit movement over snow. You will conduct several over snow movements
during the remainder of this course using the techniques described in this presentation. This will assist
you with planning and execution of training at your unit.
Check on Learning.
1. Which is more efficient skis or snowshoes?

Skis are more efficient as long as the soldier is proficient.
2. Which is easier to learn skis or snowshoes?

Snowshoes are easier to learn.

162
699-8019: Move over snow on snowshoes
Motivator: One of the keys to successful operations in a snow-covered environment is mobility. This
has been proven many times on the battlefields of Europe and Korea. Some vehicles have been
designed to operate on snow-covered terrain and air mobile operations offer a big advantage. The
means of mobility, however, is limited by terrain and weather. Specialized vehicles and air support will
not always be available to you. In a short period of time, you can learn to use snowshoes to efficiently
move over snow covered terrain.
Terminal Learning Objective

ACTION Move over snow on snowshoes
CONDITION Given the military snowshoe with bindings, ski poles and vapor barrier boots,
rucksack (with a minimum load of sleeping bag, sleeping pad, extra pair of
socks, extra pair of mitten inserts, additional packing list items may be
prescribed by unit), ECWCS, other issued cold weather clothing items, ballistic
helmet, LCE with 2 quarts of water, weapon and a 5 kilometer snow-covered
course with varied terrain
STANDARD Soldier:
- completed a 5 kilometer snowshoe movement.
- did not sustain a cold weather injury.
- met all critical performance measures IAW the student/instructor evaluation
plan.
Safety Requirements: Ensure that students are properly dressed and equipped prior to conduct of
training. Squad leader will conduct a risk assessment with students based upon the current
conditions. Squad leader will assign buddy teams to watch for cold weather injuries. Squad leader is
responsible for taking breaks in warming shelters as required.
Risk Assessment: Dependent upon current conditions. Squad instructor will conduct a thorough risk
assessment prior to any field training.
Evaluation: You will be tested on your ability to negotiate a 5 kilometer snowshoe course. There is no
time limit to complete this exercise. You must complete a 5K snowshoe movement IAW the
Student/Instructor Evaluation Guide. You will also be tested on your knowledge of snowshoe movements
given a second exam after re-training has been conducted. If you fail this second examination, you will be
Instructional Lead-In: During this period of instruction you will learn the nomenclature, maintenance
and fitting of your snowshoes. Once your snowshoes are fitted you will learn the techniques to use
them in varied snow covered terrain.
Move over snow on snowshoes

164
Learning Step Activity 1 – Maintain and fit the military magnesium snowshoe.
a. Nomenclature of the Military Magnesium Snowshoe.
(1) The Magnesium Snowshoe is light and durable. It provides excellent flotation in dry snow and/or
with heavy loads. They are approximately 48" long and 12" wide and weigh 4.8 pounds.
Military Snowshoe
4
3
2
1
7
6
5
1. Shovel 5. Window
2. Nylon Coated Steel Cable (Deck) 6. Toe Strap
3. Cleats 7. Heel Strap
4. Tail
(2) Shovel. Upward curved portion of the frame that helps keep the snowshoe on the surface of the
snow.
(3) Nylon coated steel cable (deck). Steel cable woven and threaded through the frame. Load
bearing portion of the snowshoe that provides flotation.
(4) Cleats. Protrusions on the outer frame that provide grip on hard snow.
(5) Tail. Tapered portion of the frame and deck that aids in making the snowshoe track in a straight
line.
(6) Window. Opening in the deck that allows the toe of the boot to pivot in a natural motion whilst
walking.
(7) Toe strap. Holds the snowshoe on the toe of the boot. Made of sewn nylon webbing with an
adjustable buckle.
(8) Heel strap. Holds the snowshoe onto the heel of the boot. Made of sewn nylon webbing with
three adjustable buckles, one around the ankle and two along the sides of the foot.
b. Maintain the Military Magnesium Snowshoe.
(1) Check nylon webbing (heel and toe straps) for any rips tears, or blown buckles. Replace from
unit stocks as necessary. Clean with a soft brush in warm soapy water and let air dry.
(2) Check the frame for cracks or breaks. If the tail welds break an expedient repair can be made
with parachute cord or tape. A more long term solution is to drill holes through the tail and secure with
screws. For a break in the frame on the sides a tent stake or like object can be affixed to splint the
break. Ultimately this snowshoe will need to be replaced.

165
(3) Check the deck for broken cables. Expedient repairs can be made by tying off the loose cable
and rethreading the broken portion with parachute cord. This snowshoe will ultimately need to be
replaced.
(4) Cleats can be filed to make them sharper to provide more traction.
(5) Remove dirt and foreign objects.
(6) The whole shoe can be painted white as necessary.
c. Fit the Military Magnesium Snowshoe.
(1) Begin with all straps removed.
(2) Put on toe straps.
• Place a toe strap just below the window of one snowshoe.

• Place the running end of the toe strap through the deck cables directly below and in line with
the side of the window.
• Pass the running end through the webbing underneath the toe strap.
• Place the running end through the deck cables directly below and in line with the other side of
the window.
• Pass the running end through the alligator clip. The point of the adjustment buckle points to
what is now the outside of the snowshoe.
• Repeat the procedure for the other snowshoe. Ensure the point of the adjustment buckle
points in the opposite direction as the first snowshoe. This allows you to determine your left
and right snowshoes.
(3) Put on heel straps.
• Lay the heel strap so the lateral running ends point towards the shovel. The sewn instep strap
should be down.
• On the same line as the toe strap, weave one lateral running end down through the deck cable
as close to the frame as possible.
• Bring the running end up through the deck and through the adjustment buckle leaving it loose.
• Repeat for this procedure with the other lateral running end.
• Repeat this procedure for the other snowshoe.
(4) Fit the boot to the snowshoe:
• Place your boot on the deck.

• Put the toe of the boot no more than ½ to 2/3 of the way into the window.
• Pull the toe strap over the boot and tighten the strap. The point of the strap points to the
outside of the boot.
• Pull the heel strap up over the tab in the rear of the boot. Secure the ankle strap.
• Pull the two lateral straps so that equal tension is on the boot. Rotate the boot up to ensure the
toe is not rubbing on the frame.
• Repeat this procedure with the other boot.
NOTE: For smaller boots the strap can be run through the oval rings, back through the deck then
through the buckles. Secure excess straps.

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Learning Step/ Activity 2 - Fit and maintain the MSR Military snowshoe.
The MSR Military Snowshoe is light and durable. It will provide you with flotation in snow. The
snowshoes consist of a hard plastic deck with steel crampons and bars to aid in traction. They are
approximately 22" long and 8" wide, without flotation tails, and weigh approximately 3 lbs 10 oz. To order
these snowshoes contact MSR at www.msrgear.com . Ask for government sales and the MSR military
snowshoe with 8 inch flotation tails.
a. Nomenclature of the MSR Military Snowshoe.
(1) Shovel- the upturned front portion of the snowshoe designed to help it ride toward the surface
of the snow.
(2) Window- opening of the snowshoe there to allow the toe of the boot to enter through for added
traction and give the user natural movement of the feet while walking.
(3) Deck- Middle flat portion of the snow shoe.
(4) Bindings- allow for the attachment of the snowshoes to the boot.
(5) Tail- elongated rear of the snowshoe designed so that the snowshoe will track in a straight line
while walking.
(6) Crampon- Metal structure under deck, directly under boot, that aids in traction on ice and hard-
packed snow.
(7) Steel Bars- Serrated edges run the length of the shoe on both sides that aid in traction on ice
and hard-packed snow.
(8) Flotation Tails- Detachable additional decking at rear of snowshoe that provides greater
flotation for powder snow or heavier weight.
(9) Elevator Tabs- Metal bars that raise the wearer’s heel to decrease the angle of the wearer’s
foot when climbing steep terrain.

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b. Fit the MSR military snowshoe.
(1) Lay the snowshoes on the ground. The running end of the heel strap should be to the outside of
your foot.
(2) Place one boot underneath the toe straps until the front of the boot is no more than ½ to 2/3 into
the window.
(3) Starting with the front toe strap, tighten each toe strap until it is snug against the boot. Take care
not to cut off circulation or over-tighten to the point that the strap breaks.
(4) Secure the heel strap to your boot, just above the heel lug. The running end of the heel strap
should be on the outside of your boot to prevent you from tripping over it.
(5) Repeat with the other snowshoe.
Learning Step/Activity 3 – Move on snowshoes.
a. On flat or rolling terrain:
(1) Walk with your feet apart slightly wider than normal to prevent stepping on or catching the other
snowshoe.
(2) Raise the toe of the snowshoe just high enough with each step to clear the snow as the tail
slides over it.
b. On gentle slopes climb straight up hill or descend directly downhill.
c. On steep terrain, ascend by traversing. Try to pack a level trail as you traverse the slope. You can
descend steep terrain using the same technique or you can move directly down the slope.
d. To change directions you can:

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(1) Make a step turn. Simply move the outside snowshoe a few inches towards the desired
direction of travel. Then move the other snowshoe until it is parallel to the one you first moved.
Continue the process until you are facing the desired direction of travel.
(2) Make a kick turn. Use kick turns to turn around in tight or steep terrain:
• Lift one foot and place the tail vertically on the ground next to the window of the stationary
shoe.
• Maintaining balance, allow the snowshoe to fall backwards so the feet are pointing in opposite
directions. Do not place the snowshoes on top of each other.
• Bring the other snowshoe around and place next to the first one.
e. Additional considerations.
(1) Use ski poles as an aid to balance, especially when carrying heavy loads and/or moving uphill.
(2) Try to step over obstacles. Place the snowshoes parallel to the obstacle and straddle it one leg
at a time. If a large obstacle cannot be avoided step directly on it with as much contact as possible.
(3) Do not try to bridge depressions with the snow shoe as it will place undue stress on the frame
and may break it.
(4) MSR military snowshoe is suited for most conditions. It does not provide as much flotation as the
magnesium snowshoe especially if you are carrying a heavy load. The magnesium snowshoe provides
better flotation in deep, dry snow, but provides less traction for movement up and down hills. In all
cases, the first individual will break a trail and will work harder than those behind him. For this reason
you must rotate trail breakers.
(5) Carrying a weapon. Attach the sling to the rear sling swivel and the slip ring (where the hand
guards attach to the receiver). Hang the weapon over your neck and firing side shoulder, muzzle down.
The weapon can be placed behind the canteen on the firing side hip to keep it out of the way while
using ski poles. Or attach the sling at the slip ring and the small of the butt stock and hang in the same
manner. Another method is by use of a “three point sling” available commercially.

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SECTION IV. SUMMARY
You should now understand how to set-up, maintain and use your snowshoes. You should also
understand the advantages and the disadvantages of using snowshoes.
Check on Learning.
1. Why should you step directly on to logs or other obstacles with the snowshoe?
To prevent excess stress on the snowshoe frame.
2. What is one of the advantages to using snowshoes?
Snowshoes are easier to use, and require little training to be proficient.

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699-8022: Haul the scow-sled (ahkio) using skis and/or snowshoes
Motivator: The Ahkio sled can carry a load of 200 pounds over difficult terrain and is used for carrying
tents, stoves, fuel, rations and other necessary items of each tent group. They are also used for carrying
weapons and ammunition. They may be used as firing platforms for machine guns in deep snow and are
particularly useful in the evacuation of casualties. Without the availability of an ahkio you will either have
to carry the equipment on your back or have to survive without it.

ACTION Haul the scow-sled (ahkio) using skis and/or snowshoes
CONDITION Given a sled-scow (ahkio), 4 traces, and harnesses in a field environment
on snow covered terrain
STANDARD Unit:
- hauled the scow sled over a designated route using skis and/or
snowshoes.
Safety Requirements: Daily Risk Assessment conducted. OIC/NCOIC must have medical evacuation
plan ready for soldiers injured during this training.
Risk Assessment: Dependent upon current conditions. Squad instructor will conduct a thorough risk
assessment prior to any field training.
Evaluation: You will be tested on your knowledge of sled hauling during a one hour written examination
been conducted. If you fail this second examination, you will be dismissed from the course.
Instructional Lead-In: You will learn different techniques for moving unit equipment with the scow sled.
Haul the scow-sled (ahkio) using skis and or snowshoes

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Learning Step/Activity 1 – Prepare to haul the ahkio sled.
a. It is easiest to pull an ahkio with snowshoes. You may use skis; if skis are used they must be waxed
for more grip than glide or climbing skins should be utilized.
b. Secure the following equipment:
(1) 27 foot tow rope (has a snap hook or carabiner at each end and a metal attachment ring in the
middle)
(2) 3 each 9 foot traces. Each trace has a snap hook or carabiner at each end.
(3) 1 each 50-60m climbing rope
(4) 4 harnesses
c. If you will be wearing a rucksack, put it on now.
d. Drape the harness over your head and fasten the metal buckle in front. The D shaped ring in the
rear of the harness is the connection point for pulling; the ring in front is for braking. If the rucksack rides
below the connection point, remove the harness and make attachments directly to the rucksack.
e. Additional Considerations.
(1) Movements of the ahkio pulling team are coordinated by one team member.
(2) Ahkio pulling teams must be rotated frequently to avoid exhaustion
(3) The trail should be broken by a trail breaking team prior to attempting to pull sleds. Heavy brush
and forest can make pulling a sled a near impossibility.

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Learning Step/Activity 2 – Haul a scow-sled (ahkio) on flat or gently sloped (rolling) terrain.
Direction of travel
Flat, slight up, or slight downhill
a. Hook the 27 foot tow rope to the front of the sled. Hook one of the 9 foot traces to the ring on the tow
rope. The remaining two traces can be hooked to the sled or one to the sled and one to the ring.
b. Connect to the end of each trace and the tow rope.
c. Pull in unison.

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Learning Step/Activity 3 – Haul scow-sled (ahkio) on moderately sloping to steep downhill.
a. Use this configuration for moderate to steep slopes. One man in the rear provides a brake.
Direction of travel
Moderate to steep downhill
b. Use this configuration for steep slopes; you are essentially allowing gravity to move the sled and
controlling the speed of the sled from the rear.
Direction of travel
Very steep downhill

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Learning Step/Activity 4 – Traverse a hill with a scow-sled (ahkio).
a. The ropes are hooked to the sled as in LSA-3, except that one or two soldiers are hooked to the
uphill side, and the rear soldier is off set to the uphill side. This prevents the sled from tumbling downhill.
Direction of travel
Traversing
Fall line

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SECTION IV. SUMMARY
The ahkio sled is a useful tool for hauling the necessary tools for a squad to survive for extended periods
of time. Now you have the skills set necessary to move this equipment over snow.
Check on Learning.
1. What is the preferred man-powered mode of transporting an ahkio?

Answer - Snowshoes
2. If using skis how should they be waxed?

Answer - More grip than glide.

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699-8025: Conduct tent and stove drill
Motivator: Operating in a cold weather environment puts extreme environmental stresses on you. It
will take you a great deal longer to perform even routine tasks and you will fatigue far faster than you
would under ordinary circumstances. Performance will improve if you can quickly prepare a heated
shelter where you have the opportunity to change your clothes, prepare hot water and food and
conduct personal hygiene.

ACTION Conduct tent and stove drill
CONDITION Given a serviceable Ahkio group, complete with the standard equipment
load, and an area large enough to set up the tent and stove group. Task
will be performed with a squad/team of no less than 5 personnel.
STANDARD Squad:
- set-up tent and readied stove for operation within 30 minutes.
- met all critical performance measures IAW the student/instructor
evaluation plan.
Safety Requirements: Daily risk assessment conducted; adjustments made to clothing and warming
shelter breaks/CWI checks based upon current conditions.
Risk Assessment: Medium (Reference USARAK Pamphlet 385-4)
Environmental Considerations: POL products are utilized during this instruction. Ensure adequate
measures are taken to prevent spills and that adequate materials are on hand to clean up any spills that
do occur.
Evaluation: You will be tested on this lesson IAW the student/instructor evaluation guide. You will
be evaluated as a squad on the tent and stove drill procedure. You will be tested on the operation
of the SHA. You will be asked to find deficiencies in a ten-man tent with SHA that has been erected
by NWTC instructors. You will also be tested on your knowledge of tent and stove drill during a one
hour written examination at the conclusion of the course (Refer to training schedule for date/time of
exam). You must score a 70% on the written exam. If you fail the written exam, you will be given a
second exam after re-training has been conducted. If you fail this second examination, you will be
Instructional Lead-In: You will now learn how to set-up, live in and strike the arctic ten man tent. You will
also learn how to assemble, operate and disassemble the Space Heater Arctic (SHA).
Conduct tent and stove drill

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Learning Step/Activity 1 – List the components of the tent (Ahkio) group.
a. Tent group equipment is designed for use by a rifle squad; however, it can readily be structured to
accommodate any task-organized unit, regardless of that unit's size or mission. This section will
discuss equipment you will need to be intimately familiar with before undertaking field training in a cold
weather environment. The tent group equipment is also commonly referred to as the ahkio group, as
the tent and the ahkio are the two key items among all the equipment that constitutes the group.
b. The following is a list of typical tent group equipment recommended for a light infantry squad
operating in cold regions:
Table 1: Tent (Ahkio) Group Contents
ITEM # NSN or ordering information
Scow-sled, 200 lbs. capacity (ahkio) 1 8920-00-273-8211
Tent 10-man Arctic, complete with pole 1 8340-00-262-3684
board
Pole Board 1 Cut a 1’x1’ piece of plywood. Cut a second 5”x5” piece
of plywood. Bore a hole that is slightly larger than the
tent pole diameter into the center of the 5”x5” piece
and glue it to the center of the 1’x1’ piece.
Door Poles 2 Cut two 6 foot poles that are 2-3 inches in diameter
Space Heater Arctic (SHA) 1 4520-01-444-2375
Stove board 1 Cut a piece of plywood 3’ x 2’, rip it lengthwise in half,
cover top side with galvanized sheet steel and re-join
the two pieces with hinges. This allows you to fold it in
half for storage.
Five gallon fuel can 1 7240-01-337-5268
Five gallon water can 1 7240-00-089-3827

D-handle coal shovels 2 5120-00-188-8446
Machetes (with sheath) 2 5110-08-13-1286
Squad cook sets 2 7630-00-272-2485
Squad stoves 2 NWTC uses the MSR Whisperlite Internationale OR the
MSR XGK-EX (this stove can be fitted with a jet that
burns JP-8) Contact MSR www.msrgear.com
Fuel bottles 2 Order from MSR
Bow saw 1 5110-00-340-3276
Ax 1 5110-01-416-7827
Hammers 2 lb. 2 5120-00-203-4656
50 or 60m static rope OR Army 120’ 1 4020-01-526-6234 (NWTC uses Blue Water Ropes/
Greenline contact APEXX 404-551-4913 or www.apexxsales.com )
Trace, ahkio pulling, 9 ft 3 Cut from static rope (you can buy in spools and cut)
Tow Rope 27 feet 1 Cut from static rope
Harnesses, Man’s, Sled (ahkio towing) 4 8465-00-255-8413
Aluminum oval carabiners (used for towing 8 NWTC uses Omega Pacific Ovals / contact APEXX 404-
and rescue systems) 551-4913 or www.apexxsales.com
Aluminum Locking Pear Shaped Carabiners 2 NWTC uses Tactical Jake HMS Screw Lok / contact
(used for rescue systems) APEXX 404-551-4913 or www.apexxsales.com
25’ 1 inch tubular nylon webbing (used for 1 NWTC uses climb spec webbing / contact APEXX 404-
rescue systems) 551-4913 or www.apexxsales.com
6’ 7mm cordelette 2 NWTC uses Blue Water 7mm accessory cord / contact
APEXX 404-551-4913 or www.apexxsales.com
Fire extinguisher 1 4210-00-165-4703
Lantern, gasoline*, with case 1 NWTC utilizes a Coleman Brand White Gas Lantern
*CAUTION: THE USE OF PROPANE-FUELED LANTERNS DURING COLD WEATHER

OPERATIONS IS NOT RECOMMENDED. PROPANE TURNS TO LIQUID AT APPROXIMATELY –
40°F. IN THIS LIQUID STATE IT MAY SPRAY FROM ITS’ CONTAINER WHEN THE VALVE IS
OPENED, CREATING AN EXTREMELY HAZARDOUS CONDITION.

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Table 2: Recommended Repair Items
ITEM NSN
CLIP, LINER 8340-00-242-7872
CLOTH, DUCK, 5 YARDS (Ahkio Cover) 8305-00-926-6171
D-RING, ONE INCH BRASS 5390-00-260-1414
LINER, TENT 8340-00-262-3698
PEAK PLATE 8340-00-965-4432
PIN, TENT, STEEL 8340-00-823-7451
POLE, TENT 8340-00-188-8413
SLIP, TENT LINE 8340-00-205-2759
TENT LINE, 12' 6" 8340-00-262-3658
TENT LINE, 19' 8340-00-262-6911
Figure 1: Tent (Ahkio) Group Contents
c. The scow sled, 200 lb. capacity, commonly known as the ahkio, is the infantry squad’s primary
means of transporting tents and other sustainment equipment in a cold weather environment. It is a 38
pound fiberglass sled with an attached canvas cover, and has a carrying capacity of 200 pounds. In
addition to its’ primary function of transporting the tent group equipment, the ahkio is excellent for
transporting weapons, rations, and ammunition, providing a stable firing platform for crew-served
weapons in deep snow, and for casualty evacuation.

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Learning Step/Activity 2 – Describe general characteristics of the ten-man arctic tent.
a. This six-sided pyramidal tent, supported by a center pole, normally accommodates ten soldiers
with their individual equipment. When necessary, it can accommodate additional personnel if their
equipment is stored outside. It may also be utilized as a command post, aid station, or storage
shelter. The tent has a liner and two doors, each of which is provided with a series of toggles and
loops around their outer edges. When additional space is required, these toggles and loops allow two
or more tents to be joined together with unrestricted access from one to another.
b. A snow cloth is attached to the bottom of the tents’ side walls; it is used to seal the tent to the
ground in order to conserve heat in exposed or wind swept areas. This is accomplished by placing
insulating material such as spruce boughs, brush, cardboard or other suitable material between the
ground and the snow cloth.
CAUTION: NEVER ALLOW THE SNOW CLOTH TO FREEZE TO THE GROUND. IN THE EVENT
OF A FIRE, PERSONNEL MUST BE ABLE TO ROLL OUT FROM UNDER THE WALLS OF THE
TENT; THERE WILL NOT BE ENOUGH TIME FOR PERSONNEL IN THEIR SLEEPING BAGS TO
GET UP AND FILE OUT OF THE TENT DOOR.
c. The tent is ventilated in four locations by built-in ventilators on opposite sides near the apex, or
top, of the tent. Four drying lines are rigged inside the tent, on which personnel can hang wet clothing
and equipment. The total weight of the tent, liner, telescoping center pole and tent pins is
approximately 76 pounds. It is quite bulky and very heavy, but is easy to set up, with few parts;
attempts to design new tents have resulted in more complex designs that are not blackout capable
and weigh as much or more than the ten-man arctic tent.
Ten-Man Arctic Tent
1. Ventilator 10. Wood toggle

2. Telescopic tent pole 11. Chape snap
3. Stovepipe opening (silicone rubber molded ring) 12. D-ring
4. Tent line, eave 13. Toggle loop
5. Steel tent pin 14. Tie tape
6. Tent line, corner 15. Tent lug
7. Tent line, corner eave 16. Tent line, door eave
8. Foot stop 17. Snow cloth
9. Becket 18. Tent slip

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Learning Step/Activity 3 – Pitch the ten-man arctic tent.
a. This shelter is easily erected by six soldiers. One technique is to designate a soldier to manage
the contents of the ahkio while the other soldiers set up the tent and stove. This man readies items
for use and prevents items from being lost in the snow. Another man sets up the stove while the tent
is erected. Use the following procedures to set-up the tent:
(1) Dig the snow to ground level or pack the snow down firmly, in the area to be occupied by the
tent.
(2) Extend the tent out:
• Unfold the tent and position it on the cleared site. Remove the daisy chain from the corner
eave lines
• One soldier grabs the apex of the tent. Three Soldiers each grab two corners. If more
Soldiers are available each Soldier can grab a corner.
• The Soldier at the apex throws the apex straight up while the other three Soldiers move out
and away.
• Rotate the tent so that the main door is positioned at an angle of 45° away from downwind.
The main entrance is the tent door located closest to the stove pipe opening in the roof of the
tent. Prevailing wind directions may be determined by examining the drift patterns of snow in
the immediate area. In areas having variable winds, a windbreak may be constructed to
shelter the main entrance.
(3) Zip both door entrances (to include liner) shut. If the tent zipper is unserviceable, use the metal
clip and D-ring, located at the bottom edge of the door to hold the door shut while the tent is erected.
If the tent is erected while the doors are open, you may not be able to zip the doors shut once all the
tent lines are tightened.
(4) Fully extend all corner eave lines. The corner eave lines are located on opposite sides of the
tent, where the roof meets the walls and the walls form corners. Altogether there are six corner eave
lines. Corner eave lines must be inline with the corresponding seams of the tent.
(5) Mark spots on the ground approximately six feet, (two steps), from each corner of the tent. This
is where the corner eave lines will be anchored.
(6) Drive tent pins on the marks. Angle the tent pins slightly away from the tent; this will prevent the
lines from slipping off the pins and/or pulling the pin out of the ground. Attach the corner eave lines to
the pins but leave them slack for now.
(7) Extend the center pole to a length between 6 and 8 feet and lock it in this position. One soldier,
“pole man”, crawls under the tent with the center pole and pole board. Place the stud at the top of the
center pole through the hole in the perforated metal plate at the roof apex. Hold the pole vertically and
place the pole board underneath the base of the pole.
NOTE: ALTHOUGH THE GROUND UNDER THE TENT MAY BE FROZEN UPON TENT
ASSEMBLY, AFTER A PERIOD OF TIME WITH THE HEATER FIRED, THE SURFACE WILL THAW
AND THE POLE MAY SINK WITHOUT THE BASEPLATE.
(8) Tighten the corner eave lines:
• The pole man maintains the vertical position of center pole.

• Two Soldiers take up a position at opposite corner eave lines. Each Soldier pulls on his
corner of the tent (not on the lines) at the same time to tighten the corner eave lines.
Continue tightening the remaining corner eave lines. The pole man can exit the tent after all
the corner eave lines are tightened.
(9) Unroll the six corner lines. They are located on the seams between the corner eave lines and
the tent roof apex. Attach the corner lines to the tent pins securing the corner eave lines. Tighten the

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corner lines. Ensure that the corner eave line and the corner line at each corner are in line with their
corresponding seams.
(10) Mark spots approximately six feet from the eave lines. Drive tent pins on the marks. Attach and
tighten the four eave lines.
(11) Anchor the two door eave lines:
• For each door, drive a tent pin in the surface approximately six feet from the tent.
• Hold the door pole vertically about three feet from the tent door, between the driven pin and
the door eave line.
• With the door eave line, position a clove hitch approximately five feet up on the door pole
and secure and then tighten the end of the line to the pin. The door pole raises the effective
door height to about four feet, allowing more clearance for entering and exiting the tent.
(12) Spread the snow cloth on the ground outside the tent. The snow cloth should not be weighted
down; doing so could prevent soldiers from rolling out of the tent in the event of a fire. The snow cloth
should not be spread inside the tent for the same reason.
CAUTION: IF THE SNOW CLOTH IS SPREAD INSIDE THE TENT, IT MAY PREVENT
PERSONNEL FROM ROLLING OUT IN THE EVENT OF A TENT FIRE.
(15) Open the four ventilators from the inside by pushing them outward.
(16) Position the fire extinguisher at the center pole.
(17) If you will be using a stove to heat the shelter, roll open the stove pipe opening flaps and
secure them in this position.
b. Additional considerations.
(1) Getting a shelter up with the stove running should be rehearsed prior to going to the field. ALIT
training is the ideal time to do this. Rehearsals should include putting the tent up with Arctic mittens
on.
(2) Digging in the tent is preferred, as it reduces the tents' profile, and the tent is better protected
from the wind. Digging in also provides some protection from enemy observation as well as from
small arms fire. In open areas a snow wall should be constructed to protect the tent from the wind.
This will facilitate heating of the tent, as well as reduce the likelihood of the tent being blown down.
Allow a minimum of 6.5 feet clearance between the walls of the tent and the walls of the snow pit; in
the event of a fire, personnel must have room to roll out from under the tent walls in order to escape
the flames.
(3) Pins do not hold well in snow, and may be difficult or impossible to drive into frozen or rocky
ground. In wooded areas, tent ropes may be rapidly and securely anchored by attaching lines to
trees, branches, logs, or stumps whenever possible. If natural anchors such as trees are unavailable
and difficulty is encountered driving tent pins, suitable anchors may be established in snow using
"deadman" anchors.
• A deadman anchor is simply any object with a large surface area which can be dug into the
ground or snow with the long axis of the object perpendicular to the end of the tent line. The
tent line is then attached to the center of the object, and the hole filled with the removed dirt
or snow. The looser the material from the hole, the more surface area the object will require
to be an effective anchor.
• On rocky ground, tent lines may be tied off to large rocks, or weighted down with piles of
stones. Occasionally, tents may be pitched on ice. Ice pitons or screws may be used in place
of tent pins. If ice pitons or screws are unavailable, an anchor may be established by
chopping a small hole into or through the ice, and placing a stick or pole into the hole.
• The object placed in the hole may freeze in place permanently. To prevent damage to the
tent lines, attach a separate rope or wire to the object in the ice hole and secure the tent line

183
to this material. If you are unable to chop completely through the ice, water may be poured
into the hole after the stick is placed into it, causing the object to freeze in position, creating a
much more secure anchor.

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Learning Step/Activity 4 – Explain the characteristics of the Space Heater Arctic (SHA).
a. General Characteristics.
(1) The SHA is used to heat the ten man tent. The SHA can burn both liquid and solid fuels,
although operation with solid fuels requires some minor modification. The SHA and component parts
weigh approximately 41 pounds.
(2) The SHA provides heat in the range of 15,000 to 25,000 BTU/hour. The Thermoelectric Fan
(TEF) will help to circulate the heat generated by the SHA.
(3) Approved liquid fuels are JP-5-8, DF-A-1-2, Kerosene and Jet A; approved solid fuels are wood
and coal.
CAUTION: Gasoline, JP-4, used motor oil, solvents or other unauthorized fuels should NEVER
be used. Using unauthorized fuels will create a fire danger and potential for explosion.
(4) One 5-gallon can of approved liquid fuel will burn for approximately 15 hours at the maximum
firing rate. Operating temperatures are -60 degrees F to +50 degrees F. Operating elevations are to
0-6,000 feet above mean sea level. It is possible to operate the SHA at higher elevations, but the
stove will require more frequent cleanings and inspections.
(5) A piece of plywood, slightly larger than the base of the stove and sheathed in tin or aluminum,
should always be carried as part of the tent group equipment. This "stove board" provides a firm base
for the stove to stand on, as well as reducing the fire hazard when the stove is operated in a tent
where the floor is covered with grass, leaves, or other potentially combustible material.
(6) When disassembled for transport, all of the components with the exception of the stove board
will fit inside the stove body, reducing the space required to pack the stove in the ahkio.

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Learning Step/Activity 5 – Describe the major components of the SHA.
Figure 3: Location of Major Components
a. Stack cap assembly (1). The Stack Cap Assembly is installed on the top of the nested stack
assembly (4) to prevent down-drafts from entering the heater during operation. It also prevents rain,
leaves, and other debris from entering the stack assembly. Guy lines (2), secured to three wire ropes
(3), lead to tent lines that stabilize the entire stack assembly (4) in an upright (vertical) position
during heater operation.
b. Nested stack assembly (4). Consists of six pipe sections (middle sections not shown) of
decreasing diameter. When assembled, the sections form a cone-shaped stack with the largest
diameter section at the base and the smallest diameter at the top. Each section is flanged on its
smaller end in order to fit into the next higher section. The assembly (4) seats in the stack adapter

186
assembly (5), allowing combustion gases to discharge outside the tent during operation. When
disassembled, the sections fit inside each other for storage in the upper portion of the heater body (6).
c. Heater body assembly (6). Basic shell of the heater.
d. Lid assembly (7). The lid assembly (7) fits into a circular opening on the top surface of the heater.
The built-in sight glass (8) allows the user to monitor the burner flame. It also permits access to the
burner down tube assembly (9) when igniting liquid fuel. The lid assembly (7) is stored in the upper
portion of the heater body (15).
e. Door assembly (10). Hinged door is secured with a slide latch. When opened, it allows access to
install and remove the solid fuel grate (11) and burner cover assembly (12). It permits adding and
igniting fuel in solid fuel operation. A built-in sliding draft gate (13) allows burn rate control during
solid fuel operation only.
f. Burner cover assembly (12). During solid fuel operation, this cover (12) is positioned on top of
burner shell (18) to prevent ashes, coals, and embers from falling into the burner shell. During liquid
fuel operation, the cover (I 2) is positioned in the frame of the door assembly, and held in position by
the closed door (10), to achieve a tight air seal.
g. Solid fuel grate (11). Elevates solid fuel while it burns to allow for air circulation and to provide an
area for ash deposits. The Solid Fuel Grate MUST be removed prior to liquid fuel operation.
Rear door (14). The Rear Door fits on the rear of the heater and acts to contain the parts which may
be stored in the storage enclosure (15) while the heater is not in use.
h. Rear storage enclosure (15). Accessed through the rear door (14) and used to stow all loose
parts that will not fit inside the heater body during transport of the heaters. Items stored in this area
include the Fuel Flow Control Valve (16), Stack Cap Assembly (1), and Gravity Feed Adapter (26).
i. Burner shell assembly (17). Area of combustion in liquid fuel mode. Consists of a perforated
burner shell (18), high fire ring (19), and up-tube (20) which is welded into the base of the burner shell
(18). It permits fuel vapors to flow into the down-tube assembly (9) during operation.
j. Down-tube assembly (9). A capped down tube which is positioned on the up-tube (20) and
removable through the lid assembly (7). A super-heater ring is located on the exterior for heat
transfer. During operation, fuel flows into the up-tube (20), where its level is gravity-maintained with
the fuel flow control valve (16). Fuel vaporizes due to combustion heat and fuel vapor is expelled
from the up-tube (20), down through the down tube and into the burner shell (18) where it ignites.
The down-tube (9) and up-tube (20) are cleaned with the reaming tool (21), which Is kept inside the
heater body during storage (15). The reaming tool (21) should be stored in an accessible yet
protected location when not in use.
k. Fuel flow control valve (16). Mounts to a 'T" shaped bracket (22) and slides into position on the
right side of the heater body (6). The valve (16) functions safely with the liquid fuels specified in this
work package. When set properly, internal orifices match the viscosity of the fuel being used to meter
the correct fuel flow to the burner. The cup/cable assembly (23) is attached to the bracket and is
used for measuring fuel to prime the heater in liquid fuel mode.
l. Fuel can stand, collapsible (24) (optional item). Allows the fuel can (25) to be mounted in an
inverted position to permit gravity fuel ' feed to the fuel flow control valve (16). (Note: The Fuel Can
Stand is available as Additional Authorized Item as detailed in WP0045).
m. Gravity feed adapter (26). Threads onto fuel can (25). Hose (27) allows during operation. The
automatic vent (28) permits air to vent into the can for proper fuel flow to the heater.Fuel hoses (29) (30).
Fuel supply hose (29) allows fuel flow from fuel can (25) through the gravity feed adapter (26) to the fuel
flow control valve (16), through the hose to the burner up-tube (20). An overflow hose (30) drains fuel
outside the tent in the event of a malfunction of the Fuel Flow Control Valve (16). Hoses, (29) and (30),
connect with quick-disconnect couplings. The fuel control outflow hose (31) delivers fuel from the control
valve to the burner assembly. The fuel supply hose (29) and overflow hose (30) are both stored in the
upper portion of the heater body (15).

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Learning Step/Activity 6 – Assemble the Space Heater Arctic.
a. Before setting up the stove, inspect the tent to ensure that no conditions exist which would make
operation of the stove unsafe. Ensure that the stove pipe opening in the tent roof is serviceable, with
no cracks or tears in the silicone rubber coated ring. Next, ensure that the stove pipe opening flaps
are rolled and securely tied, and that each flap can be tied at both the top and the bottom.
CAUTION: THE LEADING CAUSE OF TENT FIRES ARE LOOSE STOVE PIPE OPENING FLAPS
COMING INTO CONTACT WITH HOT STOVE PIPES
CAUTION: INSURE ALL FUEL SPILL CONTROL MEASURES ARE IN PLACE BEFORE USING
THIS STOVE.
b. The SHA utilizes the area inside its shell for the storage of components during movement and
storage. Some of the components are stored behind the front door while others are stored behind the
rear door (See Figure 3). To unpack the SHA:
(1) To unpack the SHA, press down on the spring-tensioned Rear Door (1) and remove the Fuel
Flow Control Valve (2), Stack Cap Assembly with Tent Lines (3), and Gravity Feed Adapter (4).

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Figure 4
(2) Reinstall the Rear Door (1) by placing the bottom edge of the door in the slot at the bottom of
the heater frame. Press down on the door and swing it into position in the heater frame until the pin
on the frame engages with the small slotted hole on the top edge of the rear door. Release the Rear
Door. (3) Slide the front door latch (5) to the left and open the front door (6). Remove the Burner
Cover Assembly if it is installed in the door frame.
(4) Remove the Fuel Overflow Hose (7) (stored inside the Nested Stack Assembly), Fuel Supply
Hose (8), Nested Stack Assembly (9), Burner Reaming Tool (10), Lid Assembly (11) and Solid Fuel
Grate (12).

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(5) Install the Burner Cover Assembly (refer to next section for details). Close and latch the Front
Door (6).
(6) Before the SHA can be operated, the Burner Cover Assembly (1) must be installed according to
the type of fuel being used:
• For Liquid Fuels: If the heater will be operated in Liquid Fuel mode, the Burner Door
Assembly (1) must be installed in the door frame (2) located behind the Front Door (3). This
is to prevent any air from entering through the front door of the heater. To verify proper
installation of the Burner Cover Assembly, slide the front door latch (4) to the left and open
the front door (3); ensure that the solid fuel grate (10) is not installed. The Burner Cover
Assembly (1) must be installed in the door frame (2), blocking the area behind the front door
(3). When the Burner Cover Assembly (1) is installed, close and latch (4) the front door (3).
• For Solid Fuels: When preparing to use the heater in solid fuel mode, the Burner Cover
Assembly (1) should be installed over the Burner Assembly opening (5). To install the Burner
Cover Assembly for solid fuel operation, slide the front door latch (4) to the left and open the
Front Door (3). If the Burner Cover Assembly is currently installed in the door frame (2),
remove it and allow it to hang from its retaining chain (6). If the Solid Fuel Grate (7) is
installed, remove the grate and install the Burner Cover Assembly (1) smooth side down over
the Burner Assembly opening (5). Slide the cover back toward the rear of the heater until its
back edge (8) engages in the Burner Cover retaining clip (9). Install the Solid Fuel Grate (7)
in position over the installed Burner Cover Assembly (1) making sure to install the grate with
its feet (10) down on the deck (11) of the upper heater area.
Figure 5
WARNING: DO NOT USE UNAUTHORIZED FUELS ONLY APPROVED LIQUID AND SOLID
FUELS MAY BE USED. USING UNAUTHORIZED FUELS IN THE SHA WILL CREATE A FIRE
DANGER AND POTENTIAL FOR EXPLOSION
CAUTION: IF FUEL FLOW CONTROL VALVE ASSEMBLY IS IMPROPERLY POSITIONED OR IF
BRACKET IS BENT, A FUEL OVERFLOW COULD OCCUR INSIDE BURNER SHELL ASSEMBLY
AND CAUSE A FIRE OR EXPLOSION.

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CAUTION: FOR SAFE OPERATION, BE SURE TO ALLOW AT LEAST TWO FEET OF SPACE
BETWEEN THE HEATER AND THE SHELTER WALL. NEVER RE-LIGHT A HEATER WHEN IT IS
STILL HOT. BE SURE TO ALLOW THE HEATER TO COOL COMPLETELY BEFORE
ATTEMPTING TO RE-LIGHT. DO NOT ATTEMPT TO REPLENISH THE FUEL SUPPLY WHILE
THE HEATER IS IN OPERATION.
(7) Before operation perform the "Before Operation PMCS" on all SHA system components as
outlined in the TM, prior to preparing the heater for use. All scheduled maintenance must be
performed on the heater and its associated equipment prior to use.
(8) Set up the heater inside its operating space (shelter). The area selected must be level and free
of debris and flammable materials.
(9) Assembly of the stack assembly:
• (See Figure 5) Securely roll and tie exhaust opening closure flap (1) so it will not touch stack
assembly during heater operation. Assemble stack section (See Figure 6), (8) and (9)
(stamped 1 and 2), ensuring that the seams are lined up. Place the largest diameter stack
section (stamped 1), into the heater. Set the heater directly under the shelter exhaust
opening.
Figure 5
• First time set up only. (See Figure 6) Tie one end of each shelter line (1) to each wire rope
(2) on stack cap (3). Set this assembly aside.

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Figure 6
• Separate the stack assembly and assemble stack sections (4-7), in order of decreasing size,
onto the crimped end of each adjoining stack section. Each stack section is stamped on the
side with a number. Add the stack cap (3). Ensure that the seams on all pipes are aligned.
Lift the assembled exhaust stack (3-7) and pass it through the exhaust opening (11).
• Insert stack section (3-7) onto stack section already on the stove (8, 9). Again, ensure the
seams line up.
• Making sure that the assembled exhaust stack (10) is positioned straight, tie the stack cap
guy lines to the closest corresponding tent line, where the tent line attaches to the tent eave.
CAUTION: DO NOT CONNECT THE GUY LINES TO FIXED OBJECTS SUCH AS TREES OR
ADDITIONAL TENT PINS. IF THE TENT IS MOVED BY WIND OR AS THE RESULT OF
PERSONNEL BUMPING AGAINST IT, THE STOVE AND PIPES MUST BE FREE TO MOVE WITH
IT. IF NOT, THE STOVE COULD COLLAPSE RESULTING IN A TENT FIRE.
NOTE: If you will be operating the stove with liquid fuels, go to Learning Step/Activity 7. If you will be
operating the stove with solid fuels, go to Learning Step/Activity 8.
Learning Step/Activity 7 – Place the SHA into operation utilizing liquid fuel.
a. Install the fuel flow control valve (See Figure 7):
WARNING: FIRE OR EXPLOSION CAN RESULT. IF FUEL FLOW CONTROL VALVE ASSEMBLY
IS IMPROPERLY POSITIONED OR IF BRACKET IS BENT, A FUEL OVERFLOW COULD OCCUR
INSIDE BURNER SHELL AND CAUSE A FIRE OR EXPLOSION.
CAUTION: WHEN LIGHTING OR REFUELING THE STOVE, ALL PERSONNEL IN THE TENT
MUST BE AWAKE AND PREPARED FOR EMERGENCY EXIT. A FIRE GUARD MUST BE
STANDING BY WITH A FIRE EXTINGUISHER AT THE READY.

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CAUTION: WHEN THE STOVE IS IN OPERATION, A FULLY DRESSED, ALERT FIRE GUARD
MUST BE MONITORING THE STOVE AT ALL TIMES. THIS FIREGUARD MUST BE LISCENSED
ON THE STOVE.
(1) Slide fuel flow control valve from front to back fully into the sleeve on the right side of the
heater. Be certain that the control valve is fully seated in the sleeve, does not bind in the sleeve, and
is level with heater when installed.
(2) Reach into the cutout area on the right side of the SHA and pull out the fuel control outflow
hose.
(3) Connect overflow hose Quick Disconnect (QD) to fuel discharge fitting on base of control valve.
(4) Connect fuel supply hose to fuel inlet fitting.
b. Preparing A Fuel Supply Site:
(1) Select a level fuel supply site, free of debris and open flame, at least seven feet from shelter.
NOTE: Open end of overflow hose should discharge to a safe, outside location along a downslope
and below the level of the fuel flow control valve. A piece of commercial petroleum absorbent
material, such as New Pig's Stat-Mat roll, will be placed under the end of the overflow hose to catch
any fuel that may spill. Additional commercial products are available to contain large spills, such as
New Pig's Absorbent Sock.
(2) Route the overflow hose and fuel supply hose outside the shelter to the fuel supply location.
Ensure the fuel line is routed away from the stove body to prevent it from coming in contact with the
stove body.
(3) The overflow hose should discharge to a safe, downward sloping, outside location below the
level of the fuel flow control valve. Place a petroleum absorbent mat under the open end of the hose.
WARNING: DO NOT USE ANY UNAUTHORIZED FUEL. USE OF UNAUTHORIZED FUEL MAY
RESULT IN FIRE AND/OR EXPLOSION.

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Figure 7
(4) Install Gravity Feed Adapter In Fuel Can (See Figure 8)
• At the fuel supply site, install a gravity feed adapter on a full fuel can as follows:
WARNING: GRAVITY FEED ADAPTER KIT MUST BE FULLY SEATED TO PREVENT FUEL
LEAKAGE AND FIRE.
• Set fuel ON/OFF control on the fuel flow control valve to the OFF position.
• Remove cap from mouth of fuel can and replace with gravity feeder adapter. Screw the
adapter into the fuel can securely.
• Attach male end of fuel supply hose to gravity feed adapter fitting. Set the assembled fuel
can aside.
• At the fuel supply site, set up fuel can stand with fuel can level or slightly above heater as
detailed in the next section.
NOTE: If fuel can stand is unavailable, invert fuel can with installed gravity feed adapter on a stable
support so that the bottom of the fuel can is two feet (61 centimeters) to three feet (91.5 centimeters)
above fuel flow control valve.

194
Figure 8
(5) Setting up the Fuel Can Stand (See Figure 9)
Figure 9
• If liquid fuel is to be used, the fuel can stand (optional item; the fuel can stand is available as
an Additional Authorized Item) must be assembled in order to mount the fuel can in the
proper position. The fuel can, outfitted with a fuel can gravity feed adapter, must be mounted
to the stand with the gravity feed adapter facing down. The design of the fuel can stand
places the fuel can 2-3 feet above the fuel flow control valve. See Figure 10 below for an
improvised support stand.
• Insert the bottom leg assembly into the top leg assembly until each leg is locked in place. Be
sure to orient each bottom leg so that the stabilizing straps are positioned toward the inside of
the stand. Ensure that the straps are not twisted.
• Spread the assembled leg assembly until the stabilizing straps are fully extended and the
stand is stable. The leg assembly straps are designed to ensure the stand is stable, but are
also designed to prevent the stand from sinking into snow.
• Lower the left and right support arms so that each is at a right angle to its attached leg. Place
the tripod brace under the top bracket of the stand and clip into position over the front of the
top bracket.
NOTE: Ensure that the Fuel Can Gravity Feed Adapter is fully seated and secured to avoid leaking.
• Invert the fuel can with installed gravity feed adapter and mount on the assembled fuel can
stand so that the gravity feed adapter faces the ground. Slide the right support arm through
the handle of the fuel can. Wrap the left support strap over the bottom of the fuel can. Feed
the right support strap through the fuel can handle up across the front of the fuel can body,
and over the left support strap. Secure the right strap to the left strap. The strap helps secure
a partially filled fuel can to the fuel stand during windy conditions.

195
Figure 10
• Alternately, construct a fuel can tripod with three poles approximately 4.5 feet long (Figure
10). Tie these together about two-thirds of the length from the bottom, with nylon cord, rope
or wire. Use a sling rope to secure the fuel can to the tripod. The height of the poles may
need to be adjusted to ensure that the fuel can is two to three feet above the fuel flow control
valve. If the fuel can is too high or too low, it may interfere with proper flow of fuel into the
stove.
• After raising and securing the fuel can, place a drip interceptor loop in the fuel supply hose
approximately 1 foot away from the fuel can. Do this by creating a loop in the fuel supply
hose and securing it with rope, wire, 550-cord etc. The purpose of this loop is to prevent fuel
dripping from the fuel can from traveling down the fuel supply hose and saturating the tent
with fuel (thus creating a major fire hazard).
• A trash bag with HAZMAT pad should be placed under the fuel can to catch any dripping fuel.
c. Setting The Fuel Flow Control Valve:
(1) Lift fuel selector control knob on the Fuel Flow Control Valve and set in accordance with the
outside temperature. There are two positions, ABOVE -25º F and BELOW -25º F. Pull the knob and
rotate it to the desired position. Release the control knob, making sure that the knob locks in the
indentation for the desired position.
(2) Set fuel ON/OFF control to ON.
(3) Set flow adjustment knob to HI; wait 2 to 5 minutes in order to allow the fuel flow control valve
and burner up-tube to fill with fuel. This step should only be performed under conditions below -25º F
(-32º C), degrees below zero. Under warmer conditions it will not be necessary to wait 2-5 minutes.
(4) Shake or tap hoses to clear any air bubbles that may be trapped in the hoses.
(5) Open the door assembly and verify that the Burner Cover Assembly has been installed in the
door frame. Shut and latch the door.
d. Lighting the stove:
(1) Open the heater lid.

(2) Be sure that the down-tube is securely fitted over the up-tube inside the burner.
(3) Hold the priming cup under priming valve on fuel supply hose. Open the valve slowly and fill
the cup with fuel. Shut valve when cup is full.
(4) Pour fuel into the bottom of burner. If the outside temperature is below -25º F (-32º C), pour an
additional cup of fuel into the bottom of the burner.
(5) Take a short length of tissue or paper, rolled into a ball, and soak up any excess fuel that may
remain in the cup. Do not discard the paper.

196
(6) Light the fuel soaked toilet tissue and toss it into the bottom of the burner.
(7) Use the cleaning tool, if necessary, to make sure that the burning tissue reaches the bottom of
the burner where it can ignite the priming fuel. Make sure that the burning tissue remains down in the
burner. Close the Lid Assembly.
(8) When the heater has warmed up sufficiently and begins to give off heat
(approximately 5-10 minutes), gradually adjust the flow adjustment knob to desired heat output.
NOTE: In extremely cold conditions, if the firing rate on Hi setting is not generating sufficient heat
output, tap the control valve and shake the hoses to eliminate any air that may be trapped. If output is
still insufficient, turn the heater control valve to LO for 5-10 minutes, which will heat the bottom of the
burner. Then turn the control valve back to the Hi position.
e. Refueling
(1) Set fuel ON/OFF control to OFF to shut down heater.
WARNING: DO NOT ATTEMPT TO REFUEL A HOT SPACE HEATER. ALLOW THE SHA TO
COOL COMPLETELY BEFORE HANDLING OR REFUELING.
(2) Remove fuel can from fuel can stand and replace with a full fuel can as detailed earlier in the
chapter.
(3) Restart heater.
g. Shutdown From Liquid Fuel Operation
(1) Set fuel ON/OFF control to OFF.

(2) Remove fuel can from fuel can stand.
(3) Allow equipment to cool down.
Learning Step/Activity 8 – Place the SHA into operation utilizing solid fuels.
a. Preparation For Solid Fuel Operation:
(1) Ensure that all components have been unpacked as discussed earlier in this work package.
Ensure that the heater is positioned properly in the shelter and that the stack assembly has been
installed as described in the section entitled "Assembling the Stack Assembly" found earlier in this
work package.
(2) Open front door and verify that the burner cover assembly is installed over the burner. If the
burner cover assembly is installed in the door frame, remove it from the door frame, lift the solid fuel
grate and put the burner cover in position over the burner.
(3) Make certain that the solid fuel grate is in position on its feet.
b. Preheating The Flue: To help ensure that no smoke blows back into the shelter on heater startup,
the flue should be preheated by opening the door and placing 2 or 3 crumpled pieces of paper on the
solid fuel gate. Ignite the paper with a match, close and latch the front door and open the draft gate.
When the paper has burned completely, add solid fuel and start the heater as described below.
c. Adding solid fuel and starting the heater:
WARNING: DO NOT USE ANY TYPE OF ACCELERANT (GAS, KEROSENE, JET FUEL ETC.) TO
HELP IGNITE SOLID FUEL - EXPLOSION OR UNCONTROLLED FIRE MAY RESULT.
WARNING: STACK FIRE POSSIBLE. WHEN OPERATING THE HEATER IN SOLID FUEL MODE,
A BUILDUP OF CREOSOTE CAN ACCUMULATE ON THE INSIDE SURFACE OF THE STACK
ASSEMBLY THAT MAY RESULT IN A FIRE INSIDE THE STACK. TO PREVENT CREOSOTE
BUILDUP WHEN OPERATING WITH SOLID FUEL, THE STACK ASSEMBLY SHOULD BE

197
CLEANED DAILY. FAILURE TO DO SO MAY RESULT IN A FIRE CAUSING SEVERE INJURY OR
DEATH.
CAUTION: WARPING OF HEATER. HEATER COMPONENTS MAY WARP FROM EXCESSIVE
HEAT CAUSED BY AN OVER FUELED FIRE. WOOD AND COAL CAN BURN EXTREMELY HOT
DEPENDING ON THE TYPE AND SIZE OF FUEL USED. DO NOT OVER-FUEL FIRE AND CLEAN
ASHES FREQUENTLY. IF COAL IS BE ING USED AS A FUEL, ADD ONLY A SMALL AMOUNT OF
COAL AT A TIME. COAL IS VERY DENSE AND PROVIDES HIGH HEAT OUTPUT. OVERFILLING
THE HEATER WITH COAL WILL CAUSE THE HEATER TO RUN EXTREMELY HOT AND IT WILL
BE VERY DIFFICULT TO CONTROL THE HEATER'S TEMPERATURE OUTPUT.
(1) After preheating the flue as described above, open the front door and position enough crumpled
paper on solid fuel grate to cover it. If using wood as a solid fuel, stack four to five pieces wood
approximately ¼ to ½ inches in diameter (kindling) in a crisscross fashion on top of paper. If using
coal as a solid fuel, place 10 to 12 pieces of coal that are approximately 2 inches in diameter on top of
the paper.
(2) Light the paper with a match. When kindling begins to burn steadily, place 2 to 3 larger pieces
of wood or a small amount of additional coal on top of kindling. Fuel may be fed either through lid or
front door assembly.
(3) Shut/latch door. Keep door and lid assemblies shut except when fueling fire or removing ashes.
(4) Adjust sliding draft gate (open more to increase burn rate and close more to decrease burn
rate). Monitor flame through the sight glass on the lid.
(5) Remove ashes frequently with a small pack shovel or scoop (not included with SHA) so that the
ashes do not accumulate up above the solid fuel grate.
d. Adding Additional Solid Fuel

(1) Open door. Using a piece of wood or the cleaning tool, push the live burning fuel back into
heater and position new fuel in front. Allow the new fuel to ignite before adding more. Add fuel until
desired burn rate is reached, but do not over-fuel. It will take 5 or 10 minutes for the heater to operate
at maximum after adding additional fuel. It may take some time to become familiar with the heater's
burn rate as different types of wood and coal have varying moisture levels.
(2) After adding fuel, shut and latch door. Keep lid and door assemblies shut except when fueling
fire or removing ashes.
e. Shutdown From Solid Fuel Operation

(1) Shut sliding draft gate on door until fire is extinguished.
(2) Allow the equipment to cool down. Perform "After Operation" PMCS.
f. Remove Ashes And Unburned Fuel

(1) After operating the SHA in Solid Fuel mode, any ashes and/or unburned fuel must be removed
from the heater. To remove ashes from the interior of the heater, slide the latch to the left and open
the front door.
(2) Remove the solid fuel grate and empty any ashes and unburned fuel into an approved
container with a small pack shovel or scoop (not included with SHA). Clean all ashes that have
accumulated on the burner cover assembly or upper deck; empty into the container. Dispose of all
ashes in an approved manner.

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Learning Step/Activity 9 – Recover the SHA and prepare for movement.
a. All of the component parts will fit into the stove body of the SHA with the exception of the stove
board and TEF. After the stove has been shut off and has cooled completely:
(1) Ensure that the fuel flow control valve is in the “OFF” position.
(2) Remove the fuel can from the tripod. Remove the gravity feed adapter from the fuel can.
(3) Remove all fuel lines and purge them of fuel. The fuel supply hose can be connected back to
itself to prevent excess fuel from leaking out.
(4) Remove the fuel flow control valve from the heater and purge of any fuel. It will be very difficult
to remove all fuel from this assembly, and it is therefore recommended that the fuel flow control valve
be placed in a plastic bag with a HAZMAT pad.
NOTE: The fuel flow control valve should be stored in the “ON” position to prevent the valve from
sticking to the body. This is not noted in the TM, but has been put out by the manufacturer.
(5) Remove and nest stove pipes in sequence taking care to NOT align the seams.
(6) Place component parts inside stove so that door and stove body openings close and lock.
(7) Return stove to Ahkio for packing.

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Learning Step/Activity 10 - Strike the Ten-Man Arctic Tent.
a. The squad leader should warn the other tent occupants 30 minutes prior to move out time. To
strike the tent:
(1) 30 minutes prior, pack personal gear.

(2) No later than fifteen minutes prior all rucksacks and personal gear should be placed outside the
tent, far enough out of the way that it will not hinder soldiers striking the tent. This gear should be
kept organized, to preclude the danger of losing items in the snow.
(3) No later than fifteen minutes prior, the stove is shut off (using the above procedure) to allow it to
cool.
(4) Remove all tent group equipment and pack into the ahkio. The last two items out of the tent are
the lantern and the fire extinguisher; as long as a flame-producing device is operating in the tent, the
fire extinguisher must be present.
(5) As soon as the stove body is cool enough to touch, disassemble and pack stove. Care should
be taken to keep stove components out of the snow; even if the stove is cool enough to touch, it is
probably still warm enough to melt snow on contact. This melted snow will re-freeze, coating the
stove component(s) with ice, making it difficult, if not impossible to set up/light at your next stop.
(6) Remove all corner and eave lines, roll and secure them. As each line is undone, its
corresponding tent pin should be pulled from the ground and placed into the ahkio; failure to do so
may result in their becoming lost in the snow.
(7) Zip both the liner and tent doors fully closed.
(8) Remove the tent pole and pole board. Collapse the pole and place it and the pole board in the
ahkio.
(9) Remove the corner eave lines from their anchors and fully extend them. Remove remaining tent
pins and placed them into the ahkio.
(10) Shake the tent out to remove ice, snow and debris. Spread the tent out by pulling the apex.
Fold the tent accordion-style.
(11) Daisy chain the six corner eave lines together, and place them on top of the tent.
(12) Fold the tent in half lengthwise, with the "daisy-chain" folded inside.
(13) Place the two shovels opposite one another in the center of the tent. Fold the tent into thirds
and place it next to the ahkio.
(14) Remove any remaining equipment and/or trash from the tent site.

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Learning Step/Activity 11 – Pack the ahkio.
a. Place tent pins in bottom center of ahkio with the heads opposite each other. Place hammers on
floor of sled on either end of the tent pins, heads opposite one another.
b. Place bow saw on top of tent pins.
c. Place stove board on top of bow saw.
d. Place fire extinguisher, center pole, axe, two MSR fuel bottles and machetes on either side of the
stove board, along the sides of the sled, ensuring that the weight is distributed evenly.
e. To the rear of the stove board, place fuel can and water can. Fuel can opening is up and to the
rear and is double bagged with HAZMAT pads for transport.
f. Lantern (in case) is placed in front of stove board, perpendicular to the long axis of the sled. Two
cook sets are placed in front of the lantern.
g. Place repair kit (ammo can) in front of the lantern. Place squad stoves on the either side of the
sled next to the cook sets.
h. Place the pole board in front of the repair kit. Place the 120 foot rope, traces and harnesses on
top of the pole board.
i. Place SHA on top of and slightly to the rear of the stove board.
j. Place the tent with shovels (so that the apex is toward the front of sled) on the SHA).
k. Fold two canvas ends of ahkio sled over sled contents. Fold sides of canvas over sled contents.
l. Place the tripod and door poles on top of canvas (field expedient poles only). The manufactured
tripod and collapsible door poles should be secured inside the sled with the center pole. Secure the
contents of sled with the lashing rope from rear to front.
b. Additional considerations
(1) This is a way to pack the ahkio. It is the standard used in NWTC courses and should be used
when conducting ALIT. However, units may tailor the load and packing order for their specific
mission.
(2) Proper weight distribution is essential when packing the ahkio. Heavy items should be placed
in the bottom and slightly to the rear of center. Loading lighter equipment toward the top will prevent
the ahkio from becoming top-heavy. The load should be packed in a manner which results in the
lowest possible profile, again, to avoid a top heavy condition. If the center of gravity is too high, the
sled will be difficult to pull, and will tend to roll over, especially when moving parallel to a slope. Tools
such as shovels, axes, saws, and machetes should be packed on the sides or top for easy access
when breaking trail or clearing bivouac sites.

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Learning Step Activity 12 – Assemble a squad MSR (Whisperlite™) Stove.
a. As with any stove that burns fossil fuels, you must be wary of the possibility of carbon monoxide
poisoning, especially when such stoves are used in small relatively airtight shelters such as snow
caves or thermal shelters. Virtually all of your cooking and snow-melting tasks are accomplished
using the squad stove, and one stove is adequate for the needs of from two to five soldiers. It is ideal
for opening in forward or remote areas where heavy/bulky equipment could be an impediment. The
squad stove is small, compact, light, and will operate on either white gas, MOGAS or kerosene.
Figure 17
b. To assemble the Whisperlite™stove:
(1) Pour fuel into fuel bottle leaving a 2" air space at the top.
Figure 18
(2) Screw pump snugly into the fuel bottle.

(3) Pump 15-20 strokes to pressurize bottle; Do not over-pressurize the fuel bottle.
(4) Unfold heat reflector and insert fuel line through center hole. Guide reflector over bottom of
legs.

202
Figure 19
(5) Rotate legs clockwise until they snap into the slots on the flame reflector. Do not move leg
containing fuel line.
(6) Insert fuel line into the fuel pump until securely seated. Swing catch arm into position so the
latch is centered on the fuel valve on the pump assembly. Fuel line will only seat completely to pump
assembly if turned to correct position; fuel line insertion “stop” will seat completely if mounted
correctly.

203
Figure 20
(7) Position stove and fuel bottle on a level, non-flammable surface.

204
Learning Step/Activity 13 - Operate the MSR Whisperlite Stove.
a. Do not burn stove inside tent. Keep flammable materials away from stove while operating. Keep
head away from stove while lighting. Do not use stove if fuel leaks are found.
b. To operate the stove:

(1) Open control valve until fuel begins to flow through the jet and moistens the burner cup and
priming wick. Immediately close the control valve.
(2) Light priming wick, and place windscreen around stove, (fuel valve is off).
(3) Allow priming fuel to burn until flame begins to diminish.
(4) Before the fuel in the primer pan stops burning, open the fuel valve slowly until the stove burner
area produces a flame. Adjust to desired setting.
• If the flame burns yellow, allow more time to pre-heat/prime.
• If the stove goes out, allow the stove to cool before re-lighting.
(5) Once stove burns with a steady blue flame, adjust valve as required.
(6) Pump two or three additional pumps at a time to increase heat output when necessary. Do not
over pressurize!
(7) Shut stove off by turning control valve clockwise until it stops. The flame may take several
seconds to die out. DO NOT OVER-TIGHTEN CONTROL VALVE.
(8) Allow stove to cool before disassembling.
Learning Step/Activity 14 – Disassemble, refuel and store the Whisperlite stove.
a. To disassemble, refuel and/or store:

(1)Close fuel valve and allow stove to cool.
(2) Invert stove and attached fuel bottle onto a Hazardous Material Absorbing Pad.
(3) Open fuel valve and allow pressure escape from bottle; a minimal amount of fuel will drain from
the stove.
CAUTION: IF STOVE HAS NOT COOLED SUFFICIENTLY, THE ESCAPING FUEL COULD IGNITE.
(4) When all pressure has escaped, close fuel valve.
(5) Invert stove and bottle.
(6) Move catch arm from position over fuel valve.
(7) Carefully pull fuel line from pump assembly. Re-fill the fuel bottle and then repeat the steps for
assembly and operating; or return all components to original configuration for storage.

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Learning Step/Activity 15 – Maintain the MSR Whisperlite.
a. Burner Maintenance: For the shaker jet versions, shake the stove up and down. An audible rattle
should be heard – proof that the shaker jet is functioning as designed. If the rattle is not heard or you
do not have a shaker jet stove, you will need to remove the jet for cleaning with the Jet Cleaning Wire.
(1) Un-screw the priming cup.
(2) Pull the generator tube out of the mixer tube.
(3) Unscrew the jet with the Jet and Cable tool. Remove the needle and clean inside the jet.
(4) Scour the fuel line. Pull the cable out of the fuel line using the Jet and Cable Tool. Wipe the
cable. Push the cable in and out of the fuel line 20-30 times to scour the generator tube. Repeat
scouring and wiping until clean. Reinstall cable.
(5) With the jet and needle out, flush the fuel line. Insert the fuel line into the Pump’s fuel tube
bushing. Open the control valve and run ½ cup of fuel through the fuel line and into a fuel container.
Reassemble the stove.
b. Pump Maintenance:
(1) The leather pump will need to be periodically checked and lubricated to ensure that it can
pressurize the bottle. Turn the shaft of the pump plunger below the swiveling head and pull the
plunger out. Chap stick or MSR Pump cup oil will lubricate the pump cup. Rotate finger inside the
pump cup to expand the diameter. Reassemble.
(2) If the pump does not hold pressure in fuel bottle, clean the check valve assembly. Turn the
check valve plug counterclockwise. Remove the check valve ball and spring and wipe with a cloth.
Reassemble.
(3) O-rings may crack or tear. If any of the O-rings are cracked, torn, or pitted they should be
replaced prior to use.
c. For additional information on this, the MSR Whisperlite Internationale or the MSR XGK-EX contact
MSR at www.msrgear.com .
Figure 21

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SECTION IV. SUMMARY
Heat and shelter are essential requirements for successful cold weather operations. You now understand
how to provide shelter and heat for a squad sized element using the ten-man arctic tent and SHA.
Check on Learning.
1. Is JP-4 or gasoline an authorized fuel in any of the stoves described above?

No.
2. If the stack assembly is sticks too far out of the top of the tent opening can you remove some of the
sections to make it fit better?
No. All stack sections must be used in order for the stove to operate properly.
3. How should you store the fuel flow control valve? The fuel flow control valve should be stored in a
plastic bag with a HAZMAT pad. The ON/OFF valve should be stored in the “ON” position to prevent
it from sticking the valve body.

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699-8026: Use an H-45 Stove
Motivator: Operating in a cold weather environment puts extreme environmental stresses on you. It
will take you a great deal longer to perform even routine tasks and you will fatigue far faster than
you would under ordinary circumstances. Your performance will improve if you can quickly prepare
a heated shelter, where you have the opportunity to change your clothes, prepare hot water and
food and conduct personal hygiene.

ACTION Use an H-45 stove
CONDITION Given a serviceable H-45 and an area large enough to set up the stove
STANDARD Individual soldier:
- Operated the H-45 IAW the Student/Instructor Evaluation Plan.
- Met all critical performance measures IAW the Student/Instructor
Evaluation Plan.
do occur.
Evaluation: You will be tested on this lesson IAW the student/instructor evaluation plan. You will be
tested on the operation of the H-45. You will also be tested on your knowledge of the H-45 during a
one hour written examination at the conclusion of the course (Refer to training schedule for
date/time of exam). You must score a 70% on the written exam. If you fail the written exam, you will
be given a second exam after re-training has been conducted. If you fail this second examination,
you will be dismissed from the course.
Instructional Lead-In: You will now learn how to assemble, operate and disassemble the H-45 stove.
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Learning Step/Activity 1 – Explain the general characteristics of the H-45.
General Characteristics:
a. Equipment Characteristics, Capabilities And Features. (See Figure 11)

(1) The Type I (Solid Fuel) heater is designed to operate safely with either wood or coal. The Type
II (Liquid Fuel) heater is designed to operate safely with either diesel fuel (DF-A, DF-1 or DF-2), or jet
fuel (JP-5 or JP-8). It should be noted that there are two different H-45 stoves – the Type I which
burns solid fuels only and Type II which burns liquid fuel only. At NWTC you will be exposed to the
Type II Liquid Fuel H-45 only.
WARNING: OLDER VERIONS OF THE TECHNICAL MANUAL 9-4520-257-12&P STATE GASOLINE

AND JP-4 ARE APPROVED FUEL SOURCES FOR USE IN THE H-45. HOWEVER, BY THE NEW
TM 9-4520-257-12&P DATED 30 SEPTEMBER 2003 AND BY ORDER OF THE COMMANDING
GENERAL USARAK, JP-4 AND GASOLINE WILL NOT BE USED DUE TO THE VOLATILITY OF
THESE FUELS.
WARNING: THE FUEL FLOW CONTROL VALVE OF THE SHA AND H-45 LOOK SIMILAR. THESE
COMPONENTS ARE NOT INTERCHAGEABLE. USING THE SHA FUEL FLOW CONTROL VALVE
WITH THE H-45 OR THE H-45 FUEL FLOW CONTROL VALVE WITH THE SHA WILL CAUSE THE
STOVE TO MALFUNCTION.
(2) The H-45 is used to heat all General Purpose Tents. The H-45 and component parts weigh
approximately 60 pounds.
(3) The H-45 provides heat in the range of 20,000-45,000 BTU/hour. The Thermoelectric Fan
(TEF) will help to circulate the heat generated by the H-45. The TEF is not issued with the H-45 and
must be procured separately.
(4) Approved liquid fuels are JP5-8, DF-A-1-2, Kerosene and Jet A; approved solid fuels are
wood and coal. Gasoline, JP-4, used motor oil, solvents or other unauthorized fuels should
NEVER be used. Using unauthorized fuels will create a fire danger and potential for explosion.
(5) One 5-gallon-can of approved liquid fuel will burn for approximately 8 hours at the maximum
firing rate.
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Figure 11
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210
Learning Step/Activity 2 – Identify the components of the Type II H-45.
a. Major Components Of The H-45 Type II (Liquid Fuel) Heater (see Figure 12)
(1) Heater assembly. The Type II (Liquid Fuel) Heater assembly consists of a heater body base (1)
and atop heater shell (2). The heater body base (1) serves as a base for the assembled heater. It
houses the burner shell assembly (3) during operation. Two heater body base doors (4) are cut into
the heater body base (1) at opposite positions to allow air for combustion. A support (5) to hold the
fuel flow control valve bracket (6) is welded adjacent to the front heater body base door. Three evenly
spaced bolt and wing nut assemblies (7) are welded to the heater body base (1). Three evenly
spaced brackets (8) are welded to the top heater shell (2). The three bolt and wing nut assemblies (7)
secure the top heater shell (2) to the heater body base (1) when the bolts are slid into the brackets (8)
and the wing nuts are tightened. During the operation of the H-45 Type II (Liquid Fuel) Heater, the top
heater shell (2) is placed onto the heater body base (1) and secured. The top heater shell (2) has one
internally flanged, 9-inch (22.86-centimeter(cm)) circular cutout (9) to accommodate the lid (10), and
one externally flanged 4-inch (10.16-cm)cutout (11) that serves as mounting for the stack pipe
sections (12).
(2) Burner shell assembly and adapter ring. The burner shell assembly (3) fits into the heater body
base (1). It consists of a rolled steel pot (13) with a high fire ring (14), a burner cap assembly (15),
and a super heater assembly (16). An adapter ring (17) that engages the upper rim of the heater body
base (1) is welded to the burner shell assembly (3). The high fire ring (14) is held in place by three
clamps (18) that attach to the adapter ring (17) with pan head screws. A cleaning tool (19) is used to
clean soot and any buildup from the inside of the up-tube and down-tube.
(3) Fuel flow control valve. The fuel flow control valve (20) is mounted on the side of the heater
body base (1). The fuel flow control valve (20) is designed to function with JP-8; DF-A, DF-1, or DF-2;
JP-5; kerosene; Jet A-1; Jet A; gasoline (emergency only); and JP-4 (emergency only). It has several
orifices to match the various viscosities of the fuels being used. The orifices are cut to permit a
maximum and minimum flow rate consistent with the safe operation of the heater.
(4) Exhaust system. The exhaust system consists of six stack-pipe sections (12) connected end to
end, leading from the 4-inch (10.16-cm) externally flanged circular cutout (11) on the top heater shell
(2), through the tent roof (21), and topped by a stack cap assembly (22), to which three wire ropes
and guy lines (23) are attached to provide stability.
(5) Hose assemblies. The hose assemblies conduct fuel from the fuel source to the fuel flow control
valve(20), from the fuel flow control valve (20) to the burner shell assembly (3), and from the fuel flow
control valve (20) to the overflow area.
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211
Figure 12
• Fuel Supply Hose. The fuel supply hose connects between the fuel can gravity feed
adaptor and the fuel flow control valve. It supplies fuel to the H-45. A “T” connector with
petcock permits fuel to be drained off into the measuring cup for priming.
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212
• Fuel Overflow Hose. The fuel overflow hose connects to the fuel flow control valve and allows
any overflow fuel to be sent outside the shelter.
• Flow Control Burner Hose. The flow control burner hose connects to the fuel flow control
valve and supplies the fuel to the burner shell assembly.
(6) Fuel Can Stand. The fuel can stand supports a standard plastic fuel can in an inverted position
in order to gravity feed fuel to the heater. The stand disassembles and folds for packing.
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213
(7) Gravity Feed Adapter. This adapter installs in a standard issue plastic fuel can and permits fuel
to flow by gravity from the fuel can to the H-45 Type II (Liquid Fuel) Heater.
(8) Thermoelectric Fan (TEF), Optional. The TEF is an optional component of Type II (Liquid Fuel)
Heater. The TEF generates its own power from the heat generated by the heaters and is placed on
the indented area on the top heater shell of theH-45s.
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Learning Step/Activity 3 – Assemble the Type II H-45.
a. Install and assemble the heater. (see Figure 13)
WARNING: If the heater has not been used before, you will have to completely assemble the
heater outside of the tent (to include the six-section stack assembly and tie down), burn off
the protective film, allow the heater to cool, disassemble the heater, and then move the
heater inside the tent. Make sure you allow enough at least 4 feet of air space between the
tent walls and the heater unit. While in operation, the heater exterior will become very hot.
Frequently check for heating of the tent walls while the heater unit is in use. If the tent walls
become too hot, the heater needs to be shutdown, allowed to cool, and moved to a tent stack
shield opening location farther away from the tent walls, if available. Failure to follow these
procedures could result in the heater igniting the tent.
NOTE: For best operation, be sure that the heater is as level as possible.
(1) To prepare the H-45 Type II (Liquid Fuel) Heater for operation (after the protective film has
been burned off), place the heater on the ground under a tent stack shield opening. If used on top of
a tent floor, the heater must be set on a bed of sand or placed on three or four bricks. Level the
base by eye. NWTC uses a sawed off 55 gallon drum with dry sweep as a base.
(2) Open the front base heater door (1), pull the priming cup (2) on the retainer wire (3) out of the
heater body base until the wire is fully extended, and set aside.
(3) Remove the top heater shell (4) from the heater body base (8) by loosening the wing nuts on
the bolt and wing nut assemblies (21) and sliding them out of the brackets (22) on the top heater
shell (4). Set the top heater shell (4) aside. If not already done, remove all the components stored
inside the heater.
(4) Replace the burner shell assembly (5) in the heater body base (8). If necessary, rotate the
burner shell assembly (5) to ensure that the pipe nipple (6) aligns with the left side of the front base
heater door opening (7) in the heater body base (8). Pull the flow control burner hose (9) through
the front base heater door opening (7). The burner shell assembly (5) and adapter ring (10) welded
to its top must be level and fully engaged all around the circumference of the heater body base (8).
(5) The superheater (11), burner cap assembly (12), and high fire ring (13) are all installed when
shipped. Ensure that these parts are in place as illustrated.
(6) Insert the fuel flow control valve (14) into the bracket holder (15) on the heater body base (8).
(7) Attach the free end of the flow control burner hose (9) to the flow control outlet (16) on the
bottom of the fuel flow control valve (14). To do this, pull back on the female Quick Disconnect (QD)
fitting on the end of the flow control burner hose (9), insert it on the flow control outlet male QD
fitting, and release the female QD fitting. Gently pull on the flow control burner hose to ensure the
connection is secure.
(8) Attach the female QD fitting on the fuel overflow hose (17) to the fuel overflow male QD fitting
(18) on the fuel flow control valve (14). To do this, pull back on the female QD fitting on the fuel
overflow hose (17), insert it on the fuel overflow male QD fitting (18) on the fuel flow control valve
(14), and release the female QD fitting. Gently pull on the fuel overflow hose to ensure the
connection is secure. Set the free end of the fuel overflow hose aside.
(9) Connect the female QD fitting (19) on the fuel supply hose (23) to the fuel supply male QD
fitting (20) on the fuel flow control valve (14). To do this, pull back on the female QD fitting (19) on
the end of the fuel supply hose (23), insert it on the fuel inlet male QD fitting (20), and release the
female QD fitting (19). Gently pull on the fuel supply hose (23) to ensure the connection is secure.
Set the free end of the fuel supply hose (23) aside.
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215
(10) Place the top heater shell (4) on the heater body base (8). Place the bolt and wing nut
assemblies (21) in the brackets (22) on the top heater shell (4) and tighten the wing nut.
Figure 13
b. Assemble The Stack. (See Figure 14)
WARNING: Ensure the stack pipe sections seat together securely. Poorly fitted stack sections may
allow a hot stack to fall on the tent and start a fire or allow deadly carbon monoxide to leak into the
tent.It is important to stake the exhaust stack securely since this will keep the exhaust stack vertical
and seated firmly within the stack adapter with a downward force. This also stabilizes the heater
and helps prevent it from being knocked over if bumped by equipment or people inside the tent.
The tent needs to be securely staked to prevent the tent roof and walls from flapping during snowy
and windy conditions. If the tent itself is not tightly staked, the roof and sidewalls can flap, getting
close to the heater and creating a fire danger. Refer to the tent-specific operator manual on
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216
the proper staking of the tent. During operation, the H-45 heater produces harmful carbon
monoxide and other gases. Carbon monoxide is a colorless, odorless, and tasteless gas.
Remember that although carbon monoxide has no telltale odor, it may mix with other odors that
mask its presence; therefore, carbon monoxide can be present within a mix of seemingly harmless
odors.
Mild cases of carbon monoxide poisoning can cause symptoms such as nausea, dizziness, or
headaches. Severe cases of carbon monoxide poisoning can result in brain damage, heart damage,
or death.
To prevent carbon monoxide poisoning, ensure that the H-45 heater exhaust stack sections fit
together snugly and that the exhaust gases are properly vented through the roof of the tent. Keep
the H-45 heater in good working order. Ensure that all possible sources of carbon monoxide
leakage have been repaired and that the operating space is well ventilated.
NOTE: All six stack pipe sections and stack cap assembly must be assembled, put securely in place
on the top heater shell flange, and tied down during heater operation. Failure to use all six sections
will adversely affect heater performance, increase soot buildup, and increase maintenance.
The type of tent, use of a step aid (if available), and height and strength of the persons assembling
the stack may alter the following stack assembly procedures.
(1) When the H-45 Type II (Liquid Fuel) Heater is first delivered, the stack assembly sections are
provided as curved sheet metal sections. They must be formed into cylinders and their seams
locked. Refer to the section entitled “Assembling the Stack Sections for the H-45 Type II (Liquid
Fuel) Heater” in the Technical Manual for information on assembling the sections before initial use.
(2) Outside the tent, roll back the flap (12) on the tent stack shield opening (11), and tie it back
securely. (Refer to the tent-specific operator manual for this procedure.)
(3) Inside the tent, securely install the uncrimped end of one of the stack sections onto the
crimped end of another stack section (8-3). Securely install the stack cap assembly (1) with the
attached guy lines (2) onto the crimped end of the stack section (3).
(4) Insert the stack cap and attached guy lines through the tent stack shield opening.
(5) Securely install the bottom of the stack assembly (8) onto the flange (9) on the top heater
shell.
(6) One person should remain in the tent stabilizing the stack assembly, while two other persons
go outside the tent and retrieve the three guy lines (2) from the roof of the tent.
NOTE: The use of a long stick or other such object (not supplied with the H-45) may be needed to
retrieve the guy lines from the tent roof. Once the guy lines are retrieved, additional lengths of rope
(not supplied with the H-45) may have to be added to the end of each guy line before the ropes can
be anchored to the stakes.
(7) Outside the tent, drive three stakes (not supplied with the H-45) into the ground, positioned
evenly apart and a minimum of 2 feet (0.61 m) from the base of the tent. Space the guy lines (2)
equally to ensure the stack is in a vertical and stable position. Securely anchor the guy lines (2) to
the stakes ensuring that the lines are stretched tight. Ensure the guy lines and ropes DO NOT touch
the roof or sides of the tent.
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217
Figure 14
c. Prepare a Fuel Supply Site. Prepare the fuel site as for the SHA. All considerations that apply
for the SHA also apply for the H-45.
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218
Learning Step/Activity 4 - Start and operate the Type II (Liquid Fuel) H-45.
a. Starting and Operating the H-45. (See Figure 15)

(1) Open both base heater doors (1, 2).
(2) Set the fuel selector control knob (6) to the proper position for the ambient temperature and the
fuel being used as described in WP 0004 00, Table 2. Once the temperature and fuel are determined,
lift the fuel selector control knob (6), and turn the entire control assembly until the fuel selector control
knob (6) engages in the detent. Release the fuel selector control knob (6).
(3) Turn the fuel OFF/ON control (7) on the fuel flow control valve (8) to the ON position.
NOTE: The flow adjustment knob (9) on top of the fuel flow control valve increases the fuel flow when
turned clockwise and decreases the fuel flow when turned counterclockwise.
(4) Turn the flow adjustment knob (9) to the HI position. Wait 5 to 10 minutes for the flow control
burner hose (11) and burner uptube (10) to fill with fuel. Shake and tap the hoses (11,15) to free any
air that may be trapped in the hoses. Turn the flow adjustment knob (9) back to setting “3.”
(5) Using the 4-ounce cup (12) attached to the retaining wire (13), open the priming valve T-
connector (14) on the fuel supply hose (15), and carefully fill the cup with fuel. Remove the lid
assembly (18), and pour one 4-ounce cup of fuel into the bottom of the burner shell assembly (16)
through the lid assembly opening.
NOTE: When operating with diesel fuel or JP8 in very cold temperatures, if problems are
experienced getting the heater to light or to continue burning, it may be necessary to repeat step 5.
Make sure the flame is out completely and the heater is cool before adding additional fuel.
NEVER add additional fuel when the burner is lit or hot.
(6) Roll a piece of tissue paper, or similar material, into a ball approximately 2 inches in diameter.
Use the paper to wipe the cup (12) to remove any remaining fuel. Do not discard the paper. It will be
used when lighting the heater.
WARNING: Keep your hands and face away from heater lid opening when lighting the burner to
prevent getting burned. If the flame is accidentally extinguished, WAIT UNTIL THE BURNER COOLS
BEFORE RELIGHTING. NEVER LIGHT A HOT HEATER. LIGHTING A HEATER THAT HAS NOT
COOLED COULD RESULT IN AN EXPLOSION.
NOTE: Check all three hoses, the fuel flow control valve, and the gravity feed adapter for leaks before
and after lighting the heater. Make sure that all QD fittings are securely engaged. If a leak occurs
while the heater is in operation, shut down the heater immediately, and notify your supervisor
if the leak cannot be corrected.
(7) When lighting the burner with JP-8, diesel, JP-5, kerosene, Jet A-1, or Jet A fuel, place the
tissue paper used to wipe the cup (12) on the top of the heater near the edge of the heater lid
opening. Light the tissue paper, and push the paper into the burner shell assembly, making sure it
goes to the bottom of the burner shell assembly (16). The burner reaming tool (17) can be used to
force the burning paper to the bottom of the burner shell assembly (16) if necessary. Replace the
heater lid immediately.
NOTE: If fuel flow is slow, shake and/or tap the hoses to eliminate any air bubbles.
(8) With the fuel flow adjustment knob at setting “3,” wait until the burner shell assembly
warms up before increasing the fuel flow with the fuel flow adjustment knob.
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219
Figure 15
NOTE: The heater is designed to operate at various firing rates, producing between 20,000 to 45,000
BTUs. A smoking, pulsing, or sooty heater indicates an overfire or underfire condition.
NOTE: Viscosity of liquid fuel is not consistent at all times and locations. If the heater appears to be
overfiring at high settings or underfiring at low settings, adjust the fuel flow adjustment knob (4)
counterclockwise or clockwise until the flame is clear, no smoke or soot is observed, and the pulsing
stops. (See Figure 16)
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220
Figure 16
b. Changing Fuel Can.
WARNING: Do not exchange heater unit fuel can unless the heater is turned off. Do not smoke, and
ensure that there is no open flame in vicinity. Fire or explosion may result.
(1) Turn fuel ON/OFF control to the OFF position.

(2) Remove empty fuel can from stand and set upright on ground.
(3) Remove gravity feed adapter kit from empty fuel can.
(4) Install adapter kit into full fuel can, insuring that the gasket on the adapter stays in place during
installation. Wipe excess fuel from the washer, washer seat, and the lid of the fuel can.
(5) Place fuel can in an inverted position on fuel can stand or other support, not less than 2 feet
and no more than 3 feet above fuel flow control valve.
(6) Wait until the stove has cooled and light the stove using proper lighting and operating
procedures.
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221
Learning Step/Activity 5 - Shut down, recover, and store the H-45.
a. Shutdown procedures:
(1) Turn fuel ON/OFF control to the off position.
(2) Remove fuel can from stand and set upright on ground.
(3) Let the stove cool.
(4) Set fuel can on ground and disconnect adapter kit. Replace fuel can cap.
(5) Disconnect supply flow control hose assembly from adapter kit and fuel flow control.
(6) Disconnect flow control-burner hose assembly from fuel flow control. Remove fuel flow control
and bracket and purge of any fuel. It will be very difficult to remove all fuel from this assembly, and it
is therefore recommended that the fuel flow control valve be placed in a plastic bag with a HAZMAT
pad. The fuel flow control valve should be stored in the “ON” position to prevent the valve from
sticking to the body.
(7) Remove and separate stack cap assembly, tent lines, and stack pipes from each other.
(8) Loosen three wing nuts holding top heater shell to heater body base and remove top heater
shell.
(9) Remove burner shell assembly from heater body base.
(10) Clean all components of soot, carbon buildup and fuel residue.
return burner shell assembly to heater body base.
(11) Return top heater shell to heater body base and secure with bolts and wing nuts.
(12) Open lid and return all accessory components to heater body base.
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SECTION IV. SUMMARY
You can now maintain and operate a H-45 Type II Liquid fueled stove.
Check on Learning.
1. Is JP-4 or gasoline an authorized fuel in the H-45?

No.
2. If the stack assembly is sticks too far out of the top of the tent opening, can you remove some of
the sections to make it fit better?
No. All stack sections must be used in order for the stove to operate properly.
3. How should you store the fuel flow control valve? The fuel flow control valve should be stored in a
plastic bag with a HAZMAT pad. The ON/OFF valve should be stored in the “ON” position to prevent
it from sticking the valve body.
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223
699-8027: Utilize improvised shelters
Motivator: Soldiers have successfully lived, worked and fought in cold weather environments. The
Army provides the proper clothing and equipment to clothe, sleep and warm soldiers. In most
situations the supply system provides the resources to sustain soldiers throughout field exercises.
In certain situations, however, you may find yourself separated from traditional sustainment
equipment. Do you have what it takes to survive through a night or longer in temperatures of -20
degrees without a support base? The improvised shelters that you will learn about in this lesson are
designed to keep you fully mission capable in the absence of traditional support methods.

ACTION Utilize improvised shelters
CONDITION In a snow covered environment with temperatures of 10 degrees F or colder,
given a bow saw, parachute, 100 feet of 550-cord (thermal shelter only),
shovel(s), ECWCS, other issued cold weather clothing items, issued cold
weather sleep system with insulating pad and other equipment prescribed by
unit
STANDARD Soldier:
- constructed an improvised shelter.
- bivouacked in the shelter for approximately 8 hours without the aid of an
external heat source.
- did not receive a cold weather injury during the bivouac.
plan (see below).
Safety Requirements: Instructors are required to remain with the squad during all bivouacs to ensure
that students are adhering to control measures aimed at preventing cold weather related or other
environmental injuries. A minimum of two medics will be on site to conduct checks of personnel for cold
weather and other illness/injuries. At a minimum, each student will be evaluated by medics the morning
following any bivouac. More checks may be conducted as dictated by NCOIC/OIC or 1SG/Commandant
dependent upon weather conditions. Squad instructors will also conduct periodic physical checks of
students throughout the training cycle. The frequency of these checks is dependent upon the weather
conditions. Students will place boots in sleeping bag for duration of bivouac. A heated shelter will be
available to students; students should be aware of how to get to this shelter from their improvised shelter.
Environmental Considerations: In USARAK, trees greater than 4 inches in diameter, in military training
areas, will not be cut down without prior approval from Range Control.
Evaluation: You will be tested on your ability to construct and live in a thermal shelter during the
course in session. You will also be tested on your knowledge of improvised shelters during a one
Instructional Lead-In: This lesson provides you with techniques to construct and use improvised shelters
that will protect you from cold weather.
Utilize improvised shelters

224
Learning Step/Activity 1 – Construct a thermal shelter.
a. The Thermal Shelter.
(1) The thermal shelter is primarily designed as a one to two person shelter; a larger shelter can be
constructed to accommodate a small team or squad. In forested areas, a wooden framework is normally
built and covered with a parachute, ponchos, evergreen boughs, etc. This structure is then covered with
about 8 to 10 inches of snow for insulation.
(2) Aside from the obvious benefits gained during survival situations, the shelter can also be built to
enhance forward fighting positions, LP/OPs, and other static positions away from the patrol base. The
shelter will increase soldier comfort and lengthen the time a team can remain at these perimeter
positions. Because the conditions within the shelter are reasonably comfortable without the use of
additional heat sources, use of thermal shelters in static positions may provide an excellent alternative to
using heated shelters when detection by infrared and other thermal devices must be avoided.
(3) The shelter actually becomes more efficient as the outside temperature decreases. Inside one of
these shelters, temperatures of +5°F have been measured with an outside air temperature of -40°F. This
was achieved solely by the shelters capacity to retain emitted thermal radiation; there was no additional
heat provided by personnel, stoves, or candles. If a candle or stove is used in the shelter, the door must
be cracked open or a ventilation hole must be added during construction.
(4) The key to construction is to remove the snow from the ground surface, exposing the frozen soil
which will then radiate thermal energy into the shelter. The doorway is best sealed by filling a trash bag
or other large sack with loose snow and form-fitting it into the door opening. A rucksack or other bulky
item can also be used.
b. Thermal Shelter Construction.
(1) Remove snow and ice exposing ground surface.

(2) Construct framework from available materials.
Figure 1: Framework
(3) Ensure front and sides of framework have enough slope to retain snow
(4) Frame door opening large enough so a heavily clothed soldier will fit.
(5) Door opening should be I or 2 ft. above ground to ease entry and exit.
(6) Cover framework with poncho, parachute, evergreen boughs, or other suitable material, ensure
material extends I or 2 ft. beyond skirt of framework.

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Figure 2: Covering the framework
(7) Secure material at skirt with logs, rocks, snow, etc.

(8) Cut a hole in material over door opening so material overlaps door frame.
(9) Lash material to door frame for a secure fit.
(10) Tie a 10- 12 in. diameter log or bundle of sticks above door frame to support snow load.
(11) Cover entire framework with 8- 10 inches of snow.
(12) Fill a trash bag or waterproof bag with snow and form-fit to plug door opening; a rucksack filled
with extra clothing, etc., will also work fine.
Figure 3: Finished Thermal Shelter

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Learning Step/Activity 2 – Bivouac in a thermal shelter.
a. Set up the thermal shelter for bivouac prior to entering the shelter as the shelter is small and
difficult to maneuver in:
(1) Lay a poncho on the ground (optional).

(2) Place insulated sleeping mat followed by sleeping bag.
(3) Place most equipment outside of the thermal shelter; items that will be needed at first call, for a
guard shift or that need to remain warm (equipment batteries, clothing etc.), should be brought into the
shelter and placed in the sleeping bag.
(4) Undress in the sleeping bag and keep the clothing in the bag with you.
(5) Place boots in the sleeping bag with you.
b. A candle or squad stove can be used to warm the shelter prior to entering the shelter; these
items must be extinguished when soldiers enter the shelter for the rest cycle or for any extended length
of time.
CAUTION: REMEMBER TO ADD A COUPLE OF SMALL VENTILATION HOLES IF YOU ARE

GOING TO BURN CANDLES, STOVES, ETC.
CAUTION: IT'S ALWAYS BEST TO LEAVE A SMALL CRACK IN THE DOOR OPENING TO
ENSURE ADEQUATE VENTILATION EVEN IF STOVES OR CANDLES ARE NOT USED.
CAUTION: EXTINGUISH ALL FLAMES PRIOR TO ENTERING THE SHELTER FOR ANY LENGTH
OF TIME.

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Learning Step/Activity 3 – Construct a snow cave.
a. Snow caves are relatively easy to build provided there is enough snow of the proper quality
available. Snow caves have many advantages:
(1) More easily concealed than tents

(2) Display almost no thermal signature
(3) Easy to conceal
(4) Because of the white reflective walls, are easily illuminated
(5) Simple to build
(6) Comfortable
(7) Are very warm
b. Snow caves require a large snow bank or drift, and it is important to choose this carefully and
estimate the depth of the snow before starting work: examination of the ground behind the snow bank,
protruding saplings, wind blown ridges, and exposed moss surfaces and rock are often a useful guide.
For a 2 or 4 man cave a drift 10 feet wide and 7 feet deep is needed. Larger caves require
proportionally larger drifts. A snow cave can be built either by tunneling or by building it up with blocks.
Here are a few principles to observe:
(1) The top of the entrance should be lower than the sleeping bench. This will ensure that warm air
is trapped around the occupants.
(2) The ceiling should be arched and smooth to prevent dripping. Ceilings will melt back with age
and the internal dimensions of the shelter will increase.
(3) At least one snow shovel should be kept inside each snow shelter so you can dig out if the cave
or entrance collapses. Another shovel should be kept outside the entrance.
(4) Every snow shelter must have a permanently open ventilation hole in the roof or walls. A hole
made with a ski pole is suitable for this.
(5) Building snow caves follows no firm rules as the depth and condition of the snow will vary and
the tactical needs may dictate the type and degree of comfort which can be achieved.
c. The Tunnel Method.
(1) A tunnel is made into the snow bank. Initially only one man can work but later two can be
employed. The front man tunnels while the second clears the excavated snow away from the
entrance. Having dug in approximately two meters, the location of the sleeping bench must be
decided. If there appears to be plenty of snow, it is best to have a sleeping bench on either side of the
tunnel lying along the axis. If the snow bank is narrow, it may be necessary to have the sleeping
bench at right angles to the tunnel. A snow block can be used to seal the entrance but care must be
taken to ensure that a ventilation hole is kept open. (See Figure 4)

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Figure 4: Tunnel Method
d. The Block and Cave Method.
(1) If the snow is easy to cut into blocks, the block and cave method should be used. The principles
for deciding the internal layout are the same as for tunneling. Having decided on the total internal
width of the snow hole, digging can proceed straight into the snowdrift all along the width. There is
plenty of room to work and several men can work together while one man digs the entrance tunnel to
the side of the main excavation.
(2) Once the snow hole is completed and the sleeping benches and stove position determined, the
cave can be sealed with snow blocks. These are best cut during the last stages of excavation as the
snow is usually more densely packed inside a drift. Using snow blocks from this area reduces the
amount of snow moving. (See Figure 5)

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Figure 5: Block and Cave Method

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Learning Step/Activity 4 – Bivouac in a snow cave.
a. Snow caves generally have more room than a thermal shelter. Equipment can be brought into the
cave if there is enough room; ideally most equipment should remain packed and ready and stored outside
the shelter. A poncho can be placed on the bench; the bivouac cover for the MSS is recommended.
Place insulated sleeping mat followed by sleeping bag.
b. The soldier should undress in the sleeping bag and keep the clothing in the bag with him. This is
especially true of boots; these must be kept in the sleeping bag with the soldier.
c. A candle or squad stove can be used to warm the shelter prior to entering the shelter; these items
must be extinguished when soldiers enter the shelter for the rest cycle or for any extended length of time.

OF TIME
CAUTION: DO NOT BUILD A SNOW CAVE IF THE SNOW WILL NOT SUPPORT ITSELF WHILE
TRYING TO CONSTRUCT THE CAVE ENTRANCE (I.E. THE SNOW COLLAPSES WHILE DIGGING
THE ENTRANCE TUNNEL). IF THE SNOW COLLAPSES SELECT A DIFFERENT SITE OR
CONSTRUCT A QUNIZHEE SHELTER.

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Learning Step/Activity 5 – Construct a Quinzhee Shelter.
a. In alpine regions and other barren conditions, shelter can be constructed by piling up a large
mound of snow and then digging into it. Even light powder snow will solidify enough once it is
disturbed and shoveled into a mound. This variation to the Thermal Shelter, similar in appearance to a
snow cave, is referred to as a molded-dome shelter or "Quinzhee Shelter".
b. Although the quinzhee shelter may look like a snow cave, this molded dome should not have a
sleeping bench. Dig the entire living area down to ground level (or as close to it as possible) and seal
the entrance as you would the thermal shelter.
c. To construct the Quinzhee Shelter (for two personnel):
(1) Clear an area down to the ground (or close to it). The area should be at least 2 feet wider and 2
feet longer than a pair of sleeping mats placed side by side. Place a ski pole upright, in the center.
Place a second pole along the ground towards one of the long ends.
(2) Begin to pile snow back into the area.
(3) After piling 2-3 feet of snow up, walk on the area to pack the snow down.
(4) Continue to pile snow, periodically stopping to pack the snow down. Pile and pack snow into a
dome at least five feet in height.
(5) Let the snow set for about 3-4 hours. After this time, check to see that the snow has sufficiently
hardened. If it has not you will need to wait until it does, possibly repacking the area.
(6) If the snow has hardened, begin to tunnel in from one of the long ends of the dome along the ski
pole, at or just above ground level. Remove snow until you reach the center pole and then begin to
widen the sleeping area until two personnel can fit. The ceiling should be arched and smooth to
prevent dripping. Ceilings will melt back with age and the internal dimensions of the shelter will
increase. Make the walls at least 8-10 inches thick.

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Learning Step/Activity 6 – Bivouac in a quinzhee shelter.
a. A quinzhee shelter generally has more room than a thermal shelter. Equipment can be brought into
the cave if there is enough room; ideally most equipment should remain packed and ready and stored
outside the shelter. A poncho can be placed on the ground; the bivouac cover for the MSS is
recommended. Place insulated sleeping mat followed by sleeping bag on the ground.
b. The soldier should undress in the sleeping bag and keep the clothing in the bag with him. This is
especially true of boots; these must be kept in the sleeping bag with the soldier.
c. A candle or squad stove can be used to warm the shelter prior to entering the shelter; these items
must be extinguished when soldiers enter the shelter for the rest cycle or for any extended length of time.

OF TIME.

233
SECTION IV. SUMMARY
You now have experience constructing and utilizing improvised shelters.
Check on Learning.
1. Can heat sources be used by personnel in an improvised shelter?
Answer - NO, because of the danger of carbon monoxide poisoning. A candle may be used to warm
shelter prior to the rest cycle, but must be extinguished as personnel enter.
2. Why do we dig to the ground for the thermal shelter?
Answer - To gain the benefits of thermal radiation from the ground.
3. In areas with a low snow pack and few trees, what is the best choice of thermal shelter?
Answer -The Quinzhee Shelter.

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699-8028: Conduct operation of a patrol base in cold regions
Motivator: A patrol base and most forward operating bases, are tactical in nature, and are designed to
provide living accommodations within a defended position. A patrol base should seldom be occupied
for more than one night, unless it is being established in conjunction with a deliberate defense. The
forward operating base will be occupied for longer periods of time and may involve considerable
preparation. The patrol base is normally established at or after last light, should require the minimal
amount of preparation possible, and must be organized to allow for rapid and coordinated responses
to enemy action. This lesson provides you with techniques and procedures that you can use to plan
for, establish and utilize a patrol base in cold regions.

ACTION Conduct operation of a patrol base in cold regions
CONDITION In a snow covered environment with temperatures of 10 degrees F or colder,
given the ECWCS, other issued cold weather clothing items, issued cold
weather sleep system with insulating pad, other personal equipment
prescribed by unit, standard ahkio group or tent and stove normally used by
the unit in the field
STANDARD Unit:
- established and operated from patrol base(s) for four nights (one night for
CWOC and ALIT).
evaluation plan
Soldier:
- did not sustain any cold weather injuries.
evaluation plan.
Safety Requirements: Instructors are required to remain with the squad during all bivouacs to ensure
that students are adhering to control measures aimed at preventing cold weather related or other
environmental injuries. A minimum of two medics will be on site to conduct checks of personnel for cold
weather and other illness/injuries. At a minimum, each student will be evaluated by medics the morning
following any bivouac. More checks may be conducted as dictated by NCOIC/OIC or 1SG/Commandant
dependent upon weather conditions. Squad instructors will also conduct periodic physical checks of
students throughout the training cycle. The frequency of these checks is dependent upon the weather
conditions.
do occur.
Evaluation: You will be tested on your ability to select, establish and operate from a patrol
base/assembly area for four nights (one night for CWOC) at temperatures of 10 degrees Fahrenheit or
colder during the course in session. You will also be tested on your knowledge of patrol base
considerations during a one hour written examination at the conclusion of the course (Refer to training
schedule for date/time of exam). You must score a 70% on the written exam. If you fail the written exam,
you will be given a second exam after re-training has been conducted. If you fail this second
examination, you will be dismissed from the course.
Conduct operation of a patrol base in cold regions

235
Instructional Lead-In: Force protection while operating in the cold weather environment often
involves considering the terrain and weather as well as the enemy. There are objective hazards that
can create non-battle related injuries to soldiers and/or significant damage to equipment if these
hazards are not considered. This chapter discusses various factors that leaders should take into
consideration when establishing, occupying, and striking patrol bases or assembly areas, as well as
information concerning construction of improvised shelters. This chapter references Chapter 5, The
Principles of Patrolling in the Ranger Handbook. The information is meant to provide tactics,
techniques and procedures specific to the cold weather environment and is not meant to take the
place of unit SOP or dictate methods for patrolling.
The four essential requirements for survival in a cold weather environment are warmth, food, water,
and shelter. Shelter is of particular importance because, without it, it is extremely difficult to provide
yourself and your soldiers with the remaining three requirements, especially during inclement weather.
Tents can be erected quickly with proper training and adequate practice. Soldiers must understand
the importance of rehearsing this task as they would any battle drill. Soldiers that have just completed
a difficult movement, or mission must be able to quickly set up shelter, get that shelter warmed and
begin the process of making water and getting a warm meal. Units that are not competent at this task
will suffer and quickly become casualties of the cold. There is also the tactical necessity of
establishing, securing and defending a patrol base or assembly area; a unit that has not rehearsed this
for cold weather operations will spend most of their time just trying to survive and the unit will become
incapable of continuing with other missions.
It is also important to note that shelter can become a hindrance to training, as it provides a way to be
comfortable. Soldiers may be unwilling to leave the comfort of a warm shelter and training will suffer
as a result. Shelters should provide a respite from the elements, but care should be taken to ensure
that field exercises do not become winter camping trips. This faulty method of ‘training’ will translate
into soldiers that easily become casualties of the cold should they be called upon to conduct actual
military operations in a cold weather environment.

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Learning Step/Activity 1- Define the principles of patrolling.
a. All patrols are governed by five principles.
(1) Planning. Quickly make a simple plan and effectively communicate it to the lowest level. A great
plan that takes forever to complete and is poorly disseminated isn’t a great plan. Plan and prepare to a
realistic standard, and rehearse everything.
(2) Reconnaissance. Your responsibility as a leader is to confirm what you think you know, and to
find out what you don’t.
(3) Security. Preserve your force as a whole, and your recon assets in particular. Every soldier and
every rifle counts; anyone could be the difference between victory and defeat.
(4) Control. Clear concept of the operation and commander’s intent, coupled with disciplined
communications, to bring every man and weapon you have available to overwhelm your enemy at the
decisive point.
(5) Common Sense. Do what you’re supposed to do to standard without assistance, despite your
own personal discomfort or fear.
Learning Step/Activity 2 – Select and establish a standard patrol base.
a. Patrol Base.
(1) A patrol base is a security perimeter that is set up when a squad or platoon conducting a patrol
halts for an extended period. Patrol bases should not be occupied for more than a 24 hour period
(except in emergency). A patrol never uses the same patrol base twice. Patrol bases are typically
used:
• To avoid detection by eliminating movement.
• To hide a unit during a long detailed reconnaissance.
• To perform maintenance on weapons, equipment, eat and rest.
• To plan and issue orders.
• To reorganize after infiltrating on an enemy area.
• To establish a base from which to execute several consecutive or concurrent operations.
b. Fundamentals. Keep the following fundamentals in mind during patrol base operations.
(1) Site selection. The leader selects the tentative site from a map or by aerial reconnaissance. The
site’s suitability must be confirmed and secured before the unit moves into it. Plans to establish a
patrol base must include selecting an alternate patrol base site. The alternate site is used if the first
site is unsuitable or if the patrol must unexpectedly evacuate the first patrol base.
(2) Planning Considerations. Leaders planning for a patrol base must consider the mission and
passive and active security measures. A patrol base must be located so it allows the unit to
accomplish its mission.
(3) Security Measures. Security measures involve the following selection criteria and planning
considerations:
• Selection Criteria.
• Select Terrain the enemy would probably consider of little tactical value.
• Select Terrain that is off main lines of drift.
• Select difficult terrain that would impede foot movement such as an area of dense vegetation,
preferably bushes and trees that spread close to the ground.
• Select Terrain near a source of water.

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• Select Terrain that can be defended for a short period of time and that offers good cover and
concealment.
• Avoid known or suspected enemy positions.
• Avoid Built-up areas.
• Avoid Ridges and hilltops, except as needed for maintaining communications.
• Avoid Small valleys.
• Avoid Roads and trails.
c. The leader plans for:
(1) Observation posts and communication with observation posts.
(2) Patrol or platoon fire plan.
(3) Alert Plan.
(4) Withdrawal plan from the patrol base to include withdrawal routes and a rally point, rendezvous
point, or alternate patrol base.
(5) A security system to make sure that specific soldiers are awake at all times.
(6) Enforcement of camouflage, noise, and light discipline.
(7) The conduct of required activities with minimum movement and noise.
(8) Priorities of Work.
d. Occupation (Figure 1).
(1) A PB is reconned and occupied in the same manner as an ORP, with the exception that the
platoon will typically plan to enter at a 90 degree turn (this is METT-TC dependent; if there is nothing to
be gained by this step, the patrol does not do it). The PL leaves a two-man OP at the turn, and the
patrol covers any tracks from the turn to the PB.
(2) The platoon moves into the PB. Squad-sized patrols will generally occupy a cigar-shaped
perimeter; platoon-sized patrols will generally occupy a triangle-shaped perimeter.
(3) The PL and another designated leader start at 6 o’clock and move in a clockwise manner,
inspecting and adjusting the perimeter as necessary.
(4) After the PL has checked each squad sector, each SL sends a two-man R&S team to the PL at
the CP. The PL issues the three R&S teams a contingency plan, recon instructions, and detailed
guidance on what to look for (enemy, water, built-up areas or human habitat, roads, trails, or possible
rally points).
(5) Each R&S team departs at the left flank of its squad, moves a prescribed distance and direction,
and reenters at the right flank of its own squad.
(6) Squad-sized patrols do not normally send out an R&S team at night.
(7) R&S teams will prepare a sketch of the area to the squad front if possible.
(8) The patrol remains at 100 % alert during this recon.
(9) If the PL feels the patrol was tracked or followed, he may elect to wait in silence at 100 % alert
before sending out R&S teams.
(10) The R&S teams may use methods such as the "I", the "Box", or the T". Regardless of the
method chosen the R&S team must be able to provide the PL with the same information.

238
(11) Upon completion of R&S, the PL confirms or denies the patrol base location, and either moves
the patrol or begins priorities of work.
e. Priorities of Work (Platoon and Squad) Once the PL is briefed by the R&S teams and determines
area is suitable for a patrol base, the leader establishes or modifies defensive work priorities in order to
establish the defense for the patrol base. Priorities of work is not a laundry list of tasks to be
completed; to be effective, priorities of work must consist of a task, a given time, and a measurable
performance standard. For each priority of work, a clear standard must be issued to guide element in
the successful accomplishment of each task. It must also be designated whether the work will be
controlled in a centralized or decentralized manner. Priorities of work are determined IAW METT-TC.
Priorities of Work may include, but are not limited to the following tasks:
(1) Security (continuous).
(2) Prepare to utilize all passive and active measures to cover 100% of the perimeter 100% of the
time, regardless of the percentage of weapons used to cover that 100% of the terrain.
(3) Readjust after R&S teams return, or based on current priority of work (such as weapons
maintenance).
(4) Employ all elements, weapons, elements and personnel to meet conditions of the terrain, enemy
or situation.
(5) Assign sectors of fire to all personnel and weapons. Develop squad sector sketches and platoon
fire plan.
(6) Confirm location of fighting positions for cover, concealment, and observation and fields of fire.
SLs supervise placement of aiming stakes and claymores.
(7) Only use one point of entry and exit, and count personnel in and out. Everyone is challenged
IAW the unit SOP.
(8) Hasty fighting positions are prepared at least 18 inches deep (at the front), and sloping gently
from front to rear, with a grenade sump if possible.
(9) Withdrawal Plan. The PL designates the signal for withdrawal, order of withdrawal, and the
platoon rendezvous point and/or alternate patrol base.
(10) Communication (continuous). Commo must be maintained with higher headquarters, OP’s,
and within the unit. May be rotated between the patrol’s RTOs to allow accomplishment of continuous
radio monitoring, radio maintenance, act as runners for PL, or conduct other priorities of work.
(11) Mission preparation and planning. The PL uses the patrol base to plan, issue orders, rehearse,
inspect, and prepare for future missions.
(12) Weapons and equipment maintenance. The PL ensures that machine guns, weapon systems,
commo equipment, and night vision devices (as well as other equipment) is maintained. These items
are not broken down at the same time for maintenance, and weapons are not disassembled at night. If
one machine gun is down, then security for all remaining systems is raised.
(13) Water Re-Supply. The PSG organizes watering parties as necessary. The watering party
carries canteens in an empty rucksack or duffel bag, and must have commo and a contingency plan
prior to departure.
(14) Mess plan. At a minimum, security and weapons maintenance are performed prior to mess. No
more than half of the platoon typically eats at one time, and men will typically eat 1-3 M behind their
fighting positions.

239
(15) Rest/sleep plan management. The patrol conducts rest as necessary to prepare for future
operations.
(16) Alert Plan and Stand-to. The PL states the alert posture and the stand-to time. He sets up the
plan to ensure all positions are checked periodically, OP’s are relieved periodically and that at least
one leader is always alert. The patrol typically conducts stand-to at a time specified by unit SOP (i.e.,
30 minutes prior to and after BMNT or EENT).
(17) Re-supply. Distribute or cross-load ammunition, meals, equipment, etc.
(18) Sanitation and Personal Hygiene. The PSG and medic ensure a slit trench is prepared and
marked, and that squads designate urine areas. All soldiers will shave; brush teeth, wash face, hands,
armpits, groin, and feet, and darken boots daily. The patrol will not leave trash behind.
1st squad
10’oclock 2’oclock
HQ
3rd squad
2ndsquad
Patrol Base:
Machine Guns
established at
the 2, 6, and
10 o’clock to
cover the front
of squad to
their left.
Figure 1: Standard Patrol Base

240
Learning Step/Activity 3 – Select areas for patrol bases and assembly areas in cold regions.
a. Site Selection. In the cold weather environment, some types of terrain offer better patrol base options
than others; if the mission and tactical situation permit you to do so, try to choose a patrol base while
keeping the following factors in mind.
(1) Forested Areas. Forests, especially those where the vegetation is spruce or pine, provide excellent
patrol bases. Material for camouflage, firewood, and construction of both shelters and fighting positions
is abundant. Spruce and pine forests are preferable for a variety of reasons, one being that these types
of trees generally grow on well-drained soil. Another reason is that, because they retain their leaves or
needles year-round, they offer better concealment as well as protection from wind and inclement weather
than do deciduous trees, which lose their leaves during the winter months.
(2) Marshy Ground.
• Firmly frozen swampy areas, especially those that are covered with trees and brush, may also
offer a good location to establish a patrol base. Streams and rivers which are located nearby,
and which are covered with ice thick enough, may offer excellent routes for re-supply, as well as
both mounted and dismounted movement. However, it is generally difficult to construct dug-in
fighting positions; you may be forced to construct above-ground positions in these areas, using
available materials. In addition, leaders should remember that a sudden thaw may leave them
and their soldiers wallowing in a pool of mud.
• Areas lying in the bottom of deep valleys should be avoided, due to the tendency of masses of
cold air settling in low ground (also known as a temperature inversion). During windless
conditions, temperature inversions may result in a low-lying patrol base becoming enveloped in a
cloud of ice fog, which could reveal the location of the site to enemy observers, especially if they
are located on a higher vantage point than the patrol base.
(3) Open Country. Open country presents difficulties such as poor cover and concealment, exposure to
high winds and drifting snow. If you must establish a patrol in open areas, tents should be pitched (or
shelters constructed) in the lee of natural windbreaks such as depressions or the downwind side of ridges
and hills. Where no natural windbreaks exist, tents should be dug into the snow as deeply as possible
and/or loose snow or blocks of snow used to construct windbreaks.
(4) Mountainous Terrain. Above the tree line, mountainous terrain will provide little shelter from either
observation or the elements. During high winds, lee slopes may offer shelter, however, for the same
reason that they offer shelter to you, they can increase your exposure to avalanche hazards; wind-driven
snow is deposited on lee slopes, and if the slope is steep enough, that snow will eventually slide. In
snow-covered mountains, or when snowfall is imminent, you must examine a slope's potential for
avalanche prior to establishing a bivouac upon it. Refer to 699-8018 in this publication for more
information concerning avalanche hazard identification.
(5) Other Terrain/Weather Considerations
• Select terrain that is of little tactical value to the enemy.

• Select terrain that is off main lines of drift such as main ridges, creeks, valleys, couloirs – all likely
avenues of approach.
• Provided your unit has the proper equipment, water re-supply will probably not be an issue as
snow can be melted for the main water source; fuel re-supply can become an issue as it is
needed to melt the snow and/or provide heat.
• Consider dominant terrain features from which an attack could develop.
• Prevailing wind direction (the wind may carry sound to you or to the enemy, depending upon its
direction; try to select a site which is downwind from suspected enemy positions/avenues of
approach, especially when wind speeds are low).
• Consider escape routes which facilitate rapid withdrawal.
• Consider availability of camouflage/construction material.

241
• Check illumination/weather conditions (in good weather or bright moonlight, try to select a
shadowed area such as a north-facing slope or the middle of a wooded area), with S-2.
• Check thermal detection capabilities of enemy forces (also with S-2).
b. Site Reconnaissance.
(1) Security Halt of the Unit. Before occupying a patrol base, it should be laid out by a reconnaissance
or quartering party that precedes the main body. One thing that consistently gets overlooked is the
posture of soldiers waiting in a security halt for the reconnaissance element to find/establish the patrol
base site. Leaders that are left with the main body must ensure that soldiers remain warm while
maintaining security. It may be appropriate to add layers of clothing, or have soldiers get up and move in
buddy teams a few hundred meters back before returning and switching out with another buddy team. It
may also be possible to send the security element forward prior to departure of the main body. In
extreme cases it may be wise to move the entire element into the patrol base by force, though this should
never be the norm. Leaders that are on the reconnaissance must move quickly and return as soon as
possible to get the main body moving again. It is up to the unit to decide the method to use for conducting
the reconnaissance. For squad size elements it may be best to occupy by force. For platoon sized
elements, normally the Platoon leader, compass man, and one member of each squad should move
forward to conduct a reconnaissance of the patrol base. Squad members can be positioned at the 10, 2
and 6 o’clock positions (see Figure 2) and act as guides for the main body. Regardless of the method
used or the size of the unit, the reconnaissance party must leave a detailed contingency plan for the main
body.
Figure 2: Platoon Patrol Base Track Plan
(2) Tasks that must be accomplished prior to the arrival of the main body include:
• Site the Patrol Base:

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o All of the factors that were mentioned earlier in this lesson should be taken into
consideration when choosing the exact location of a patrol base or assembly area. In
addition, the establishment of a dummy patrol base should be considered.
o Dummy patrol bases, when used, should be positioned between the actual patrol base
and the area that you determine to be the most likely enemy avenue of approach.
Ideally, the dummy bivouac position should be far enough away that your soldiers have
adequate time to get into the appropriate defensive posture once the enemy is detected,
and be outside of small-arms range of the actual patrol base. When establishing a
dummy site, make maximum use of mechanical ambushes and early warning devices,
and, if possible, have it plotted as a target by your fire support assets.
• Establish Security at the Patrol Base. Initially, security may be established, and maintained until
arrival of the main body, by the use of LP/OP's along likely avenues of approach as well as by
emplacement of early warning devices. The reconnaissance party is responsible for the security
of the patrol base until relieved by personnel from the main body.
• Establish a Track Plan.
o Track plans (see figures 2, and 3) should be established before anyone enters the site.
Normally, the incoming track will be extended well beyond the point where it enters the
bivouac, and may lead to a dummy patrol base (see above). Branching off from the
incoming track, preferably at an acute angle to the direction of the enemy, is the patrol
base track, or "main street". This is the single track that enters the actual patrol base
perimeter. Minor tracks are established leading off of main street to sub-unit areas where
tents are located. Both inner and outer perimeter tracks are also established.
o Defensive positions are established along the outer edge of the inner perimeter track.
The outer perimeter track should parallel the inner perimeter track outside of hand
grenade range of the positions along the inner track. LP/OP's may be established along
the outer edge of the outer track, and extensive use of early warning devices/mechanical
ambushes should be made there as well.

243
Figure 3: Company Assembly Area Track Plan
• Select Defensive Sectors.
o The reconnaissance party should designate the defensive sectors of responsibility for
each sub-unit of the main body. The boundary between each sub-unit sector should be
marked. At a minimum the above should be accomplished by the reconnaissance party.
o The tasks listed below can also be accomplished by the reconnaissance party, but
remember to consider the time that the main body has been stationary.
• Mark Tent Sites. The location of each tent to be set up should be marked and a single trail
established to that point. Sub-unit integrity should be maintained to the greatest extent possible,
and sub-unit tent sites should be designated with regard to ease of access to that elements
defensive sector.
• Select areas for cutting brushwood/gathering snow. If brush or wood will be required for
construction of shelters or fighting positions, an area should be designated for personnel to obtain
this material. This area should be within the inner perimeter track, and cutting should be done in
a manner that minimizes the chances of detection by enemy observation from either the ground
or air. Areas for gathering snow (for water production) should be designated within the inner
perimeter as well, but away from latrines, wood cutting areas, and POL storage points. Care
must be taken to minimize the possibility that snow gathered from this area could be
contaminated, which would render the snow unfit for producing potable water.

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• Provide Guides for the Main Body
• Once the main body arrives, it is imperative that they be able to rapidly occupy the patrol base or
assembly area without at the same time compromising the track plan, or noise/light discipline.
Speed is essential because soldiers who have just completed a long oversnow movement are
likely to be perspiring as well as tired. If they are left standing in the cold while their chain of
command is trying to determine where they belong, the unit is at risk to suffer cold weather
injuries.
c. Occupation. After link-up between the guides and the main body, the guides (at least one for the
commander and for each sub-unit) should explain the site layout and track plan before actually leading
their assigned element into the PB or AA.
(1) Immediately upon arrival, the leader should confirm decisions made by the
reconnaissance/quartering party and issue orders as follows:
• Confirm/modify the track plan

• Designate temporary location(s) for weapons/equipment under his direct control to prevent loss in
the snow
• Decide the type of fighting positions (built up vs. dug in) to be used, and site them
• Confirm/modify tent locations
• Confirm/modify brush cutting/snow gathering areas and latrine sites
• Designate method of, and, if necessary, location for, garbage disposal
• Decide type of improvised shelters to be constructed (if tents are not used). If there is a high
probability of the enemy employing thermal detection devices/sights, improvised shelters such as
thermal shelters or molded dome shelters (quingy huts) emit a much smaller thermal signature
than heated tents or personnel sleeping in unheated tents (see figure 4)
Figure 4: Thermal Image of Two 10 Man Arctic Tents
• Give orders for preparation/consumption of hot drinks and a hot meal. When this order is given is
determined by the amount of progress made in preparation of defenses, as well as the need for
shelter (based upon weather conditions).
(2) As the main body moves into the patrol base, care must be taken to ensure that track discipline
(strict observance of the track plan) is enforced. In addition, noise and light discipline must be rigidly
enforced. Although it is virtually impossible to occupy a site in total silence (especially when you have to
pound tent pins or cut wood for positions and shelters) your soldiers should be trained well enough so
that they do not need lanterns or flashlights to enable them to accomplish their tasks.
(3) Once the main body has arrived, the security elements provided by the reconnaissance party
should be relieved as quickly as possible. As temperatures decrease, the need for speed in conducting
this relief becomes increasingly important. However, soldiers designated to relieve reconnaissance party
security forces must be allowed to change out of clothing that may have become perspiration-soaked

245
during the movement to the bivouac, and to adjust their clothing to ensure adequate protection while
performing relatively sedentary duties in LP/OP's.
d. Security. In very cold conditions, sentries can only remain alert for relatively short periods of time.
They cannot remain motionless or look into the wind for long, and their hearing is impaired by the
additional headwear required in cold temperatures. Leaders must use their judgment on how long their
soldiers can remain outside and be able to perform their duties at peak efficiency, and without increased
risk of cold weather injury. The time a soldier can spend outside of a heated shelter performing relatively
sedentary tasks will vary with the temperature, degree of wind chill, visibility, and the cold weather
training and experience level of the soldier. The following are some techniques that may be used for
maintaining security in cold weather; if you decide to use one, ensure that you select the technique which
best suits the tactical situation:
(1) Combined living and fighting positions may be established on likely enemy avenues of approach.
Tents or improvised shelters may be used. Ensure that warning systems are established and/or that
these positions are far enough from the main patrol base to give adequate warning of an attack to the
occupants of the main site.
(2) One complete sub-unit may be used to perform security duties at any given time; this will allow the
remainder of the unit an extended period of time to rest in heated shelters.
(3) Double the number of personnel on guard, to allow one soldier to act as a fire guard inside the
shelter/tent while another performs sentry duty. After waking up his relief the fire guard leaves the tent to
relieve the sentry, who then returns to the tent to rest and warm himself.
(4) When establishing LP/OP's or emplacing mechanical ambushes/early warning devices, always
approach the location you have selected from a flank; do not leave a trail in the snow that points the
enemy directly toward or leads them straight into the patrol base.
(5) Keep lanterns inside tents turned as low as possible; this will minimize loss of night vision for
personnel inside the tent, as well as reduce the patrol base signature created by light showing through
tent openings.
(6) Balance the need to provide heated shelter against the necessity to reduce the thermal signature of
the patrol base. Natural terrain features and snow constructions may be used to mask thermal
signatures.
e. Duties of Tent Group Leaders. The tent group leader, usually the squad leader or senior occupant of
the tent, is responsible for ensuring that the tent group is properly set up, maintained, struck, and packed,
as well as for everything that occurs inside his tent. While bivouacking, the leader must ensure that:
(1) Sleeping space is properly allocated.

(2) Weapons and equipment are stored outside the tent in accordance with standard operating
procedures.
(3) Track, camouflage, noise, and light discipline is strictly enforced.
(4) Guard/sentry rotations are established and disseminated, and guards/sentries know who their relief
is and where that soldier sleeps.
(5) Blackout is maintained when personnel enter/exit the tent.
(6) The tent is de-iced/brushed off, and drifted snow removed regularly.
(7) Fire precautions are observed.
(8) Squad stoves and lanterns are re-fuelled outside.
(9) Weapons, equipment, stoves, and lanterns are regularly maintained.
(10) Personnel brush snow off clothing and equipment before entering the tent.
(11) Soldiers dry clothes at every opportunity.
(12) Water is made continuously and proper hydration is enforced.
(13) Each soldier receives adequate rations and all rations are consumed.
(14) Cooking utensils are clean.
(15) The highest standards of personnel hygiene and sanitation are maintained.

246
(16) Ensure lanterns are hung by a chain a minimum of 18 inches below the apex of the tent. If the
lantern is closer to the tent it is a fire hazard.
f. Organization within a tent.
(1) Tents are just large enough to provide adequate sleeping space for the occupants together with a
small area for cooking, washing, and performing duty as fire guard. Orderly and disciplined
arrangements are a necessity in such cramped circumstances. The following procedures are established
to enhance the comfort, safety, and operational effectiveness of personnel required to live in tents. Many
of these procedures are readily adaptable to life in improvised shelters as well.
(2) The minimum required individual clothing, equipment, and rations are allowed inside the tent.
Generally, your canteens, daily rations, insulated sleeping mat, sleeping bag, a small, sharp, knife and
the clothing you will require if you leave the tent will be the only items you require. Of course, damp
clothing and equipment may be brought inside where it can be hung up to dry, but once dry these items
should be placed in your rucksack outside the tent. Prior to every stand-to, all items should be packed
into the rucksack so that you will have the essential equipment to survive with you (except the tent group)
if your unit is forced to execute a rapid withdrawal under pressure.
(3) All personnel living in a heated tent should have a knife immediately available at all times, and
especially while sleeping. If, despite precautions, a tent fire occurs it may take as little as ten seconds for
fire to completely engulf a tent, and less than a minute to destroy it. If personnel are asleep, with the
zipper of their sleeping bag closed, they may not have enough time to unzip the bag. If they cannot do
this, because of lack of time or a jammed zipper, they must attempt to roll out from under the wall of the
tent while still in their sleeping bag. This may prove difficult, especially for someone just shocked into
wakefulness, and still disoriented. A small, sharp, knife immediately at hand will give an individual the
ability to cut his or her way out of the sleeping bag and through the wall of the tent. This single item of
equipment may end up being the difference between life and death.
(4) As stated earlier, the tent group leader is responsible for allocating personal space within the tent.
When doing so, the leader should take into consideration the duty roster, as well as the need for an
orderly exit in the event of an emergency.
(5) Spare batteries for equipment such as NVG's or radios should be kept in the tent, although away
from sources of direct heat such as stoves and lanterns, due to their diminished power output when
allowed to become cold or frozen. Small battery-powered items such as flashlights or electric razors may
be kept in the tent as well, and are ideally stored in the owners sleeping bag.
(6) Weapons racks should be constructed outside the tent as close as possible to the main entrance.
A poncho should be used to keep sights, barrels, and moving parts on weapons from becoming clogged
with snow. Personnel should always remember exactly where on the rack their individual weapon is
located, so that, if a situation arises which results in a mad rush to arms, they will be able to grab the
correct weapon. The weapons rack is constructed in a manner identical to the cross-tree latrine, but
without the wind break a latrine requires.
(7) Rucksacks should be lined up on the ground outside the main door of the tent where they will not
interfere with personnel entering or exiting the tent. A specific order in which individuals in the tent must
line up their rucksack in relation to the others should be established to make it easy for soldiers to identify
their gear during conditions of limited visibility. Other personal equipment such as LBV/LCE's and kevlar
helmets/body armor may be draped over or placed into the rucksack.
(8) In a cold-dry environment, it is not necessary to cover rucksacks and other gear (except weapons,
ammunition, NVG's, and communications equipment) with a poncho; the temperature is too cold to allow
the equipment to become wet. Simply brush off any snow before using the item. In a cold-wet
environment, all weapons, ammunition, and personal equipment stored outside should be covered with a
poncho or other type of waterproof cover.
(9) A plastic trash bag filled with snow taken from the snow collection area should be kept inside the
tent. One of the duties of the fireguard is to melt snow for drinking water, as well as to have hot drinks

247
ready for personnel coming in from sentry duty. The five gallon water can, which the fireguard can use as
a seat, should be kept inside the tent and topped off whenever it is less than full.
(10) The amount of clothing worn by personnel while resting inside the tent will be dictated by the
tactical situation, as well as whether or not the shelter is heated. For example, if there is an increased
chance of enemy contact, you may decide that your soldiers should rest on top of their sleeping mat, fully
dressed, with their outer garments unzipped. When a scenario such as this occurs, tent group leaders
will need to ensure that the temperature of the stove is regulated so that it is warm enough to keep the
soldiers comfortable, but not so warm that they begin to perspire.
(11) When living in a close environment such as a tent or improvised shelter, the highest possible
standards of sanitation and personal hygiene must be maintained. Failure to enforce or practice good
sanitation and hygiene may expose you and your soldiers to sickness and disease. As discussed in
chapter nine the conditions that soldiers must live in during cold weather create an exceptionally good
opportunity for biological attack. In addition, a soldier is more susceptible to becoming a cold weather
casualty if he does not keep both himself and his clothing clean. Remember the "C" in the key word C-O-
L-D!
(12) If necessary, personnel should shave in a heated shelter just before going to sleep. This will allow
natural facial oils stripped off by shaving time to replenish themselves before the face is once again
exposed to the cold. These facial oils provide natural protection against cold weather injury.
(13) Soldiers should brush teeth daily. If a tooth-brush is unavailable, one may be improvised with the
chewed end of a twig. If a twig is not available, salt on a fingertip may be used to gently scrub the teeth.
(14) Underwear should be changed as often as is practical, but at least twice weekly.
(15) Finally, socks should be changed as often as is necessary to keep the feet dry.
g. Heating at night.
(1) The tactical situation, weather, and your soldiers' level of hydration must all be taken into account
when determining whether or not to operate heaters throughout the night. The major disadvantages of
heating your shelters all night long, other than increased fuel requirements, are the obvious thermal
signature of a heated shelter in the middle of a cold environment and the necessity of an additional
soldier losing sleep to perform duty as a fire guard.
(2) Some advantages of keeping the stove burning are that soldiers will lose less body heat and
conserve more energy while sleeping (with improved performance the following day). Also, troops can be
more ready to react to a threat by sleeping fully clothed on top of their sleeping bag (or just their insulating
pad).
(3) Soldiers sleeping in heated shelters will have the opportunity to dry wet clothing by allowing it to
hang in the tent while they sleep; they should not try to dry wet clothes in their sleeping bags while they
rest.
(4) Fire guards can use their guard shift to melt snow to provide potable water and hot drinks for
sentries, as well as perform weapons maintenance, monitor communications, or conduct personal
hygiene.
h. Latrines. Normally, a central latrine should be established if dispersion within the patrol base is not
too great. One latrine will normally serve the needs of up to a platoon-sized unit. The following should be
taken into consideration when establishing latrines:
(1) The preferred type of latrine for field use is a straddle trench. However due to environmental
restrictions during training, or to solidly frozen soil, it may not be permissible or possible to construct a
latrine of this type. Another type of latrine that is recommended for use is the cross tree type latrine,
especially when used in conjunction with a ration case lined with trash bags. Once filled, the bags can be
sealed, closed into the case, and burned or hauled to the rear to be properly disposed of (see figure 5).

248
Figure 5: Cross Tree Type Latrine
(2) Latrines must be sited downwind from patrol bases, but not so far from the shelters that soldiers are
encouraged to violate sanitation discipline. They should also be downwind and well away from snow
gathering areas within the patrol base. They should be wind-proofed with branches, ponchos, snow
blocks, or other available materials, and must be camouflaged.
(3) Soldiers should urinate in a designated spot on the ground, and fresh snow should be used to cover
this spot daily. The spot should not be covered after each use, because the color of the snow at this
location will give leaders valuable feedback on whether or not their soldiers are properly hydrated. If the
spot is bright yellow or a darker color, it's time to start melting more snow and forcing hydration.
i. Waste Disposal. Poor waste disposal practices, in addition to being violations of both environmental
regulations and proper field sanitation procedures, can provide the enemy with a great deal of information
which should be denied them. Follow these guidelines for proper waste disposal:
(1) Whenever possible, dispose of all garbage in pits; burn or bury it prior to departing the patrol base.
There should be a pit for each platoon-sized element, and they should be located away from and
downwind of snow gathering areas.
(2) Patrols should never leave any evidence of their presence behind them; they should carry all waste
with them until it can be properly disposed of to avoid providing the enemy with potential intelligence
information.
(3) During training, bag all trash and garbage and haul it to the rear for proper disposal.
j. Breaking Camp
(1) When a unit departs a patrol base the commander determines what time the unit will begin
movement. Using the backwards planning process, he or she will also determine "pull-pole" time as well.
The time interval commanders allow their soldiers between "pull-pole" and departure must be kept as
short as possible, and pulling poles should be done in the same order in which movement will be
conducted. The bottom line is that you must prevent your soldiers from standing around in the cold
unnecessarily.
(2) In order to do this, every leader must know how long their troops require between the time the order
to break down tents is given and the time they are ready to move. This length of time will be in inverse
relation to the amount (and quality) of both the individual and collective training that you conduct to
prepare for cold weather operations. A well trained squad should require 15 minutes, provided they have

249
been given at least 30 minutes of advance warning to prepare all of their personal gear and all of the tent
group equipment, except the tent itself, packed and ready to move. It is the tent group leader's
responsibility to ensure that their tent is ready to strike at the designated time.
(3) Before departing a patrol base, all latrines and garbage pits should be covered with at least two feet
of earth or packed snow. Finally, leaders must ensure that security precautions are not relaxed, nor
track, camouflage, noise, or light discipline forgotten.
k. Striking Tents. If a tent is slowly or improperly set up, only the occupants of that tent will suffer;
however, if a squad is slow in striking their tent, more efficient squads will have to stand in the cold and
wait for them. Therefore, ensuring that breaking camp and striking tents becomes a battle drill for your
soldiers is extremely important. Refer to 699-8025: Conduct tent and stove drill for specific instructions
on striking the tent.

250
Learning Step/Activity 4 – Select and establish a linear perimeter.
This technique is appropriate for squad sized elements. Dig out a central trench large enough to
accommodate the squad. Construct snow cave shelters by tunneling into the side of the trench. Two to
four shelters should be constructed, depending upon the size of the squad and the size of the shelters.
You should prepare enough shelters for everyone. During severe weather, it may be necessary to
provide shelter for the entire squad. Primary and alternate firing positions can be constructed. The figure
below shows the basic concept.
Main Trench
= Snow Shelter
Figure 6: Linear Perimeter

251
Learning Step Activity 5 – Construct a Crow’s Foot.
For platoon sized elements, a crow foot method can be utilized. Dig three trenches, one per squad and
construct shelters by tunneling into the sides of the trench. The platoon command post will be centrally
located. Figure 7 shows the basic concept.
= Snow Shelter
Figure 7: Crow’s Foot

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Learning Step/Activity 6 – Construct a Circular Perimeter.
Another method for a squad or platoon is to dig out a circular perimeter, excavating all of the snow in the
circle. This method will take considerable time to prepare and will present the largest signature, but is the
easiest method to defend from. Snow shelters are constructed in a manner similar to the previous
methods.
= Snow Shelter
Figure 8: Circular

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SECTION IV. SUMMARY
You now have a basis for conducing patrol base operations, assembly area operations and bivouacs in
cold regions. It is your job to take this information back to your unit and develop standard operating
procedures for your unit while conducting training and/or operations in the cold weather environment.
Check on Learning.
1. What are three open ground patrol base techniques?

Answer - Linear, Crow’s Foot and Circular.
2. What is a problem that typically occurs while the recon party looks for and establishes a PB/AA?
Answer - The main body is inactive and soldiers become susceptible to cold weather injuries. The recon
party must establish the site quickly and the main body must take steps to keep soldiers warm. Another
option is to occupy by force in extreme cold conditions.

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699-8031: Maintain vehicles in cold weather
Motivator: (Slide 1) “The cold has been identified as an enemy of military forces and equipment since
the beginning of recorded history. When employed in a cold region, a force actually faces two
enemies--the tactical enemy and the environment that also aggressively attacks and can destroy
equipment and men. The impact of cold weather on combat forces can readily be seen during decisive
campaigns in history. Napoleon’s disastrous march into Russia, Germany’s failed conquest of Russia
during World War II, and the operations of United Nations forces in Korea are modern examples. With
United States (US) reliance on global force projection, Army forces must prepare to operate in a
variety of climates, including extreme cold.”
- FM 9-207 Operations and Maintenance of Ordnance Material in Cold Weather. This is an excellent
resource for the effects of cold on military equipment.

ACTION Maintain vehicles in cold weather
CONDITION In temperatures of 32º F to -60 ºF, given a military vehicle with technical
manual to maintain and operate
STANDARD Soldier identified common problems with vehicles and took steps to reduce
or eliminate problems caused by the cold before/during/after operations.
disaster.
Evaluation: You will be tested on your knowledge of vehicle maintenance in cold weather during a
one hour written examination at the conclusion of the course (Refer to training schedule for
date/time of exam). You must score a 70% on the written exam. If you fail the written exam, you will
be given a second exam after re-training has been conducted. If you fail this second examination,
Instructional Lead-In: This lesson will give you some common effects of cold on materials and vehicles
as well as some tips and procedures to reduce or eliminate problems associated with operating vehicles
in the cold.
Maintain vehicles in cold weather

255
Learning Step/Activity 1 – Describe cold conditions and the effects that cold conditions have on
materials.
a. (Slide 3) Operating equipment in temperatures down to 10° F presents few problems. Conditions
are similar to those experienced during winter in the northern part of the continental United States
(CONUS).
b. From 10° F to -25° F, operations become more difficult. At the warmer end of this range, lack of
winterization results in only a slight loss of operating efficiency. Proper training and preventive
maintenance prevents many failures of materiel and injuries to you.
c. When temperatures drop below -25° F, operations become increasingly difficult. At temperatures
nearing -50° F and lower, it will require maximum effort on your part to perform even the simplest tasks
with completely winterized materiel. Even if heated facilities are available, the frozen parts will need to
be thawed. This lag time will need to be planned for.
d. Other than extreme cold, conditions that affect equipment most often encountered in a cold
weather environment include condensation, snow and frozen surfaces. Most equipment will operate
normally down to about 10°F. Below this temperature the physical properties of materials change and
can affect operations. Temperatures of 10°F to -65°F are encountered often in the winter season in
the interior of Alaska and other regions of the world. Equipment must be winterized to function
effectively in this range. Humidity and warm air combine with a piece of cold equipment to cause
condensation. This can freeze the internal parts of vehicles and equipment and has greater
detrimental effect in extreme low temperatures as it turns to ice. Snow creates similar moisture
problems in addition to mobility issues. Cold temperatures hinder any penetration of the ground. Cold
can also cause equipment to be cold soaked which may prevent operation, cause contact frostbite,
fusing of components, and traction problems.
Cold Conditions
COLD- few problems down to 10°F; for temperatures 10° to -25°F
special considerations for operations such as winterization of
vehicles; below -25°F routine tasks become complex
CONDENSATION- occurs when cold equipment is quickly

exposed to a warmer environment
SNOW- introduces moisture to equipment and causes

mobility problems; increases equipment loss
FROZEN SURFACES- hinders emplacement of stakes,

grounding rods; creates unstable firing platforms;
possible contact frostbite
e. (Slide 4) Effect on Materials. Severe cold changes the properties of materials that we use
everyday. You must take special care to reduce the shock load that is placed on items affected by
severe cold. Some metals can withstand only half of the shock load at -20°F that they can in
temperate climates. This is the reason that ski lifts are shut down at -20º F. Rubber remains flexible to
-20°F, then will gradually stiffen. At -60°F it loses all elasticity and becomes very brittle. Special care
must be taken when handling rubber covered cables. They must be protected from bending and
flexing. They should be warmed before bending to prevent insulation from cracking and causing a
short. Plastics tend to expand and contract much more than metal or glass. Any materials made of

256
plastic must be handled carefully. Glass and other ceramics can be expected to perform normally at
low temperatures. However, cracking may result if heat is applied directly to a cold windshield or
vehicle glass. Canvas and cotton duck fabrics retain their flexibility even at extremely low
temperatures provided that they are kept dry. Some newer tent materials become brittle and difficult to
fold at low temperatures. Flexible tent windows are extremely difficult to smooth out at subzero
temperatures.
Effects on Materials
METALS- brittle in severe cold; at -20°F certain metals (especially steel)
can’t withstand a shock load
RUBBER- remains flexible until below -20°F
RUBBER COVERED CABLES- easily cracked at low temp; should be re-

warmed before bending
PLASTICS- generally expand and contract more than metals

GLASS- windshields may crack if heat is applied too rapidly
FABRICS- retain flexibility if kept dry; shrinkage can occur

257
Learning Step/Activity 2 – Describe the effects of extreme cold on antifreeze, fuels, lubricants and
batteries.
a. (Slide 5) An anti-freeze mixture of anti-freeze compound and water must be used to protect cooling
systems from freezing. It is imperative that the correct mixture of antifreeze to water is used for
maximum protection.
The optimal mixture for extremely low temperature protection is 68% antifreeze and 32% water (7 parts
antifreeze to 3 parts water to make it easy). Above or below this mixture will result in reduced
cooling/antifreeze protection.
Arctic type antifreeze offers the maximum low temperature protection to -90°F, but is not efficient at
higher temperatures. It is only compatible with selected types of equipment.
Ensure vehicles have correct thermostats and winter fronts or radiator shutters installed.
Antifreeze
Ethylene-Glycol must be mixed to a
0
proportion of water to be effective;
68% antifreeze and 32% water is -10
optimum. -20
-30
LIQUID
Use of a block heater is important as ice -40
SLUSH
crystals will begin to form at -40°F -50
SLUSH
-60
Arctic type antifreeze protects to -90°F -70
0% 68% 80%
PERCENT ETHYLENE
GLYCOL

258
b. (Slide 6) Fuels.
(1) Mogas is not affected by low temperatures, although there are additives available which will
increase the performance.
(2) Diesel fuel contains waxes that congeal at temperatures below 0°F. If this occurs, the fuel filter
will clog and the fuel will not flow. Diesel fuel, Arctic, DFA, does not contain as much wax and performs
well at low temperatures.
(3) Condensation and water can accumulate in fuel containers, pumps, carburetors and fuel
injectors. At low temperatures, this water will form ice crystals that will clog fuel lines, filters, jets, and
injector nozzles. To prevent this, add fuel system icing inhibitor to diesel fuels. Add methanol,
technical, to gasoline.
(4) Some fuels come premixed and adding too much ice inhibitor can cause reduced engine
performance and possible engine damage.
Fuels
MOGAS is not affected significantly by low 30
temp 20
10
0 Lowest
Diesel fuel is greatly changed by the -10 Limitation
formation of waxes -20 Depicted
-30
-40
Condensation can contaminate fuel and turn -50
into ice crystals -60
-70
M DF DF DF
Additives can inhibit icing O
G 2 1( A(
AS AA Fu
FE el
The fuel point has DFA; and AAFES sells S) Po
in
DF1 during the winter months t)

259
c. (Slide 7) Hydraulic Fluids. There are specific recommendations in TM’s and LO’s concerning the
proper hydraulic fluid for cold temperatures. For example at -25º F OHT should replace FRH.
Hydraulic Fluids
Hydraulic fluids are specified in Appendix H of the
Cold Weather Operations Handbook
Use OHT in place of FRH for temperatures of -25° F

and below

260
d. (Slide 8) Lubricants. Lubricants represent the single most critical problem encountered by vehicles
in cold regions. A vehicle lubricated for use in temperate regions will simply not operate in extremely
cold temperatures. A chunk of heavy gear oil can be used to pound nails at -40°F.
(1) Check applicable TM’s and FM 9-207 for recommended lubricants. Lubricant orders are based
upon three temperature ranges:
• above 32º F
• +40º to -10º F
• from 0º to -65º F
(2) Store lubricants in warm place.
(3) OEA (oil, engine, arctic) is generally best for cold weather operations, and can be used for short
periods of time in temperate conditions. This will allow you to winterize vehicles prior to load-out when
deploying from a temperate to a cold region.
(4) Lubricants must have a sufficiently low viscosity for low temperatures.
(5) Use of unsuitable lubricants will result in difficult starting, shifting, and equipment failure.
(6) GAA has a very wide heat tolerance of -50°F to +225°F and can be used year round.
Lubricants
Check TM to find recommended 0
lubricant TEMP +40 +225
-10
Store lubricants in a warm place
-20
Oil Engine Arctic (OEA) can be used
for short periods in temperate -30
conditions -40
Grease Automotive Artillery (GAA) -50
The Lube Orders are based upon -60
three temperature ratings – above 10 10 OE G
W W AA
32 F; from 40 F to –10 F; 0 to –65 F 40 30 A

261
e. (Slide 9) Vehicle Batteries. Batteries are adversely affected by the cold; available power decreases
as battery temperature decreases.
(1) As temperatures fall, the battery’s available energy will also fall. Power requirements for starting
a vehicle increase when the battery is least capable of delivering power. For example at 15º F, a fully
charged battery will only deliver 50% of the current normally produced. At -40 and below the available
current is just about zero.
(2) A fully charged battery will not freeze. Frozen batteries rupture and break internally and
externally.
(3) Vehicle batteries do not receive an adequate charge unless the battery is warmed to about 35 F.
(4) At temperatures below -25º F, batteries should be tested every three days. If the specific gravity
is less than 1.1250, the battery should be recharged.
(5) Batteries should be filled with 1.280 specific gravity electrolyte (different form the standard 1.250
electrolyte), as this will protect the battery to -90 F.
(6) Ensure that the battery has not frozen prior to jump-starting a vehicle. A frozen battery can
explode due to the combination of hydrogen gas and the blockage of battery vents by ice.
(7) Gel Cell batteries are due to replace the standard vehicle batteries. They are generally
maintenance free, will not freeze and have a longer life span than conventional vehicle batteries.
Another advantage is that they may be submersed in water with no adverse effects.
Vehicle Batteries
TEMP
Batteries are adversely affected by cold; as the 100 max
temperature drops the current available
decreases; at -40º F the power available is 80
100%
near zero 60
A fully charged battery will not freeze; vehicle
40
batteries do not receive an adequate charge
unless warmed to 35º F 50%
20
Test batteries every three days; fill with 1.280
0
electrolyte for protection to -90º F 30%
Gel Cell batteries are generally maintenance free -20
and are replacing older style storage batteries 10%
-40 min
EFFICIENCY

262
f. (Slide 10) Small equipment batteries. Small equipment batteries for flashlights, Night Vision
Devices, and field telephones must use alkaline batteries. Two sets of batteries should be available for
each item of equipment. One set can be carried under the soldiers insulating garments. When cold
degrades the performance of equipment, batteries can be rotated. To get maximum effectiveness out
of Nickel-Cadmium, or NiCad, batteries, the charging memory must be destroyed. The battery must be
completely discharged before it can be recharged. Ni-Cad batteries are a very effective low
temperature power source. Lithium based batteries are the preferred cold weather battery. The lithium
sulfur dioxide battery is recommended for use with the SINCGARS. Mercury batteries should not be
used below 0°F. The Additional Items Authorized table in a TM has items that can be used to
externally heat small equipment batteries.
Small Equipment
Batteries
max
Small equipment batteries must be alkaline type and not dry cell.
100%
Keep small equipment batteries in interior pockets to help keep them

warm.
50%
Nickel-cadmium type is very effective at low temperatures.

30%
Lithium sulfur dioxide batteries are recommended for cold weather.

10%
min

263
Learning Step/Activity 3 - Describe preparation and operation of military vehicles in extreme cold
weather.
a. (Slide 11&12) Movement in cold weather environments can be one of the most difficult tasks that a
unit may encounter. Vehicles are the preferred method of movement, but, with cold weather comes a
higher maintenance requirement and incidence of problems. Some of the most commonly
encountered problems are listed below, along with some useful problem-solving tips, which may assist
you in accomplishing your mission:
(1) Wheel Bearings. Wheel bearings are serviced for all year round operations as GAA is rated from
225º F down to -50º F. A simple check for proper adjustment is all that is required.
(2) Hydraulic Brakes. A simple check for a full reservoir is all that is required – no change of fluids.
(3) Air Brakes. Drain reservoirs immediately after operation and close drain cocks immediately after
draining to prevent from freezing in the open position. Failure to do this can cause condensation
between the brake shoes and pads to freeze making the vehicle impossible to move. Portable heating
equipment will be needed to correct this. Condensation in brake lines, chambers etc. can freeze and
create failures in the braking system.
(4) Central Tire Inflation Systems (CTIS) and other vehicle air compressors can experience frozen
condensation problems similar to air brakes. At a minimum, drain air tanks after operation. Check for
frozen valves and report these immediately. Alcohol evaporators are part of winterization kits and are
designed to draw water out of the air going into the compressors. These should be checked before,
during and after operations.
(5) Steering Gear. Improper lubricants congeal making steering difficult or impossible. OHT or OEA
is the proper lubricant for hydraulic power steering reservoirs. DEXRON II should not be used.
Preparation for Operation and Vehicle

Winterization
Conduct PMCS using TM; see operation under other than usual
conditions
Wheel Bearings
Hydraulic Braking Systems; check brake reservoirs; no special

lubricant required
Air Brake Systems – ensure valves are operational and that air tanks
are drained to prevent condensation from forming and freezing
CTIS and air compressors – same check as Air Brake systems
Steering Gear fluid reservoirs have correct fluid
(6) Shock absorber fluid may congeal at low temperatures resulting in a hard riding shock or broken
shock absorbers. Check that they are still mounted securely to the frame and under extreme cold
conditions move the vehicle slowly for the first 3-5 miles of operation to allow the lubricant in the
shocks to warm up.
(7) Springs can become brittle and break at low temperatures. Check clips, leaves, bolts, hangars,
and shackles for proper mounting and tighten loose components.
(8) Tires become more rigid and develop flat spots when parked in extreme cold temperatures.
Inflate tires in a warm environment such as motor pool, to 10PSI above normal. This allows for
contraction and pressure loss once vehicle is out in the cold. Place barrier materials, (spruce
branches, cardboard) under tires to prevent freezing to ground when parked for long periods of time.
(9) Winterize fire extinguishers IAW the appropriate fire extinguisher technical bulletin.

264
(10) Oil engine Arctic (OEA) should be used for cold weather operations. Drain the engine
lubrication system when the engine is warm.
(11) Antifreeze. Ensure that proper antifreeze/water mixture is utilized. Generally a 68% antifreeze,
32% distilled water mixture offers the best protection against extreme cold temperatures.
(12) Inspect all belts and hoses for cracks, dry-rot, or breaks, and replace as necessary.
(13) Ensure vehicles have correct thermostats installed. To get the vehicle to an operating
temperature that will allow the engine to operate properly, a thermostat in the temperature range of
190 to 195 degrees F should be installed in a vehicle that normally uses a 150º F thermostat.
(14) Install winter fronts or radiator shutters (radiator covers).
(15) Ensure that the vehicle personnel heater is mounted and operational.
(16) Ensure that tire chains, ice scrapers, and other equipment required for operation in
cold/icy/deep snow conditions is present, and that vehicle crews are thoroughly trained in their use.
Tire chains should be pre-fitted to vehicles, and their mounting/dismounting should be a crew drill.
Preparation for Operation and Vehicle

Winterization (cont.)
Shock Absorbers
Springs
Tires
Fire Extinguishers winterized
Oil Engine Arctic (OEA)
Belts and Hoses
Thermostats
Winter Fronts or radiator shutters
Vehicle personnel heaters mounted and operated
Tire chains, swingfire heaters ice scrapers etc. are present

265
b. (Slide 13) Vehicle operation. Vehicles must be tuned and serviced prior to the onset of the winter.
Cold will cause an improperly tuned motor to run even less efficiently. Always PMCS vehicle before,
during, and after vehicle operation. Follow the TM when doing so. Some additional considerations for
operations are:
(1) Heat retention devices such as winter-fronts and higher temp thermostats must be installed to
allow efficient operation.
(2) Start engine and allow vehicle to idle for approximately 5 minutes before moving. Drive slowly at
first, allow time for moving parts to reach operating temperatures before increasing engine speed.
(3) It may be necessary to start and idle vehicles periodically to prevent the vehicle engine from
becoming cold soaked and to warm lubricants. The rate at which this is done is based upon the
ambient temperature. As temperatures dip below -25 F, it may be necessary to idle vehicles for longer
periods or at times continuously. One rule of thumb is to run the vehicle for 20 minutes every 2.5
hours. It should be remembered that this will shorten the life span of engine components, increases
fuel consumption and discharges batteries. It can compromise positions due to exhaust output and
heat signatures. It may also increase the chance of carbon monoxide poisoning.
(4) Downgrade all hoist and winch capabilities. Certain metals will lose up to 50% of their shock
load tensile strength at temperatures of –20°F or colder.
(5) Ensure that correct engine idle is set for proper battery charge (usually 1100-1200 rpms). This
may have to be increased or set higher for vehicles that operate as a command or communications
vehicle and run for longer periods.
(6) Remove ice and snow from windows.
(7) If CTIS equipped, select mode for this type of terrain; watch for indicator showing correct mode
selection on CTIS panel and adhere to speed restrictions.
(8) Place vehicle into motion by following general operating procedures in the applicable vehicle TM
under "operation under unusual conditions."
(9) Begin movement in second or third gear (manual transmission) rather than first or low. Engage
clutch gradually to prevent wheel spin. Drive slowly at first; allow time for moving parts to reach operating
temperatures before increasing engine speed.
(10) For automatic-transmission-vehicles use D2 range and gradually apply throttle.
(11) Avoid quick acceleration.
(12) Drive at reduced speed for better control and safer stops.
(13) Display turn signals earlier than usual (if tactical situation permits).
(14) Maintain at least double the normal following distance from the vehicle ahead.
(15) Pump brakes to give early warning to those following of your intention to stop (Non ABS).
(16) Apply steady brake pressure earlier when stopping for warn others of your intentions (ABS
only).
(17) Descend moderate grades in the gear normally used to climb the same grade.
(18) Install tire chains prior to vehicle operation.

266
Vehicle Operation
Vehicles must be properly tuned prior to use
Heat retention devices should be installed
Allow engine to warm for at least 3 minutes prior to movement
From -20°F to -60°F, periodic starting/movement may

be necessary to keep vehicles operational
Downgrade hoists and winch capacities by half
Engine idle must be as indicated in TM to maintain battery

charge

267
SECTION IV. SUMMARY
You now have a general understanding of some of the challenges associated with operating vehicles in
the cold weather and some techniques to overcome these problems. Refer to equipment specific manuals
for more detailed information on cold weather operation.
Check on Learning.
1. At what temperature does the cold start to significantly effect most military equipment?
At temperatures below 10 degrees F, the cold will start to have a significant effect on most military
equipment.
2. What type of batteries are preferred in the cold weather environment?
Lithium type batteries are preferred in the cold weather environment. NiCad will also work well provided
the “memory” is erased prior to recharging these batteries.

268
699-8032: Maintain weapons in cold weather
Motivator: Weapons, the lubricants used to maintain weapons and ammunition are all adversely
affected by cold weather. You must understand these effects and you must be able to take steps to
reduce these effects in order to keep your weapon working.

ACTION Maintain weapons in cold weather
CONDITION In temperatures of 32º F to -60 ºF, given assigned weapon with technical
manual to maintain and operate
STANDARD Soldier identified common problems with weapons and took steps to reduce
or eliminate problems caused by the cold before/during/after operations.
disaster.
Evaluation: You will be tested on your knowledge of weapons use in cold weather during a one
Instructional Lead-In: This lesson will give you some common effects of cold on weapons and
ammunition as well as some tips and procedures to reduce or eliminate problems associated with
firing weapons in the cold.
Maintain weapons in cold weather

269
Learning Step/Activity 1 – Describe the effects of extreme cold weather on weapons and describe
techniques for ensuring weapons function in the cold weather environment.
a. (Slide 18) Sluggishness. Weapons will function under extreme cold conditions, if given proper care.
Lubricants that are normally used under temperate conditions, such as CLP, thicken in cold weather
and stoppages or sluggish weapon action will result from their use. CLP will freeze at –35F. To
eliminate this problem, the weapon must be completely stripped, thoroughly cleaned, and lubricated
with LAW (Lubricating oil Arctic, Weapons). As a minimum, the camming surfaces of the bolt should
be lightly oiled with LAW. The rest of the weapon can be left dry. LAW is not available in the refillable
half ounce bottles normally found in weapons cleaning kits, but is available in larger sized one quart
containers (NSN 9150-00-292-9689). If LAW is not available, use a dry graphite lubricant or fire
weapon dry.
b. Condensation on Weapons.
(1) Condensation forms on weapons when they are taken from the cold into a warmer environment.
This is called "sweating". If weapons are taken back into the cold without removing the condensation
this "sweat" can turn to ice, which will result in stoppages. For this reason, it is best to leave weapons
outside when temperatures are below freezing. When left outside, weapons should be readily
accessible, but sheltered, so that ice and snow will not get into the working parts of the weapon (sights,
barrel).
(2) If necessary, weapons may be taken inside for cleaning. The condensation or “sweating” will
continue for approximately one hour after introduction of the weapon into a warm shelter. Wait until
the “sweating” process has concluded, then, begin to thoroughly clean the weapon. If weapons are to
be kept in heated shelters, they should be kept near, but not on, the floor to minimize condensation.
Weapons: Common Problems and

Solutions
Sluggishness:
• CLP thickens in cold conditions and freezes at -35º F
• Lubricate with LAW; if none available weapon should be fired
dry
• Graphite lubricant is another option
Condensation:
• Occurs when weapons are brought into heated shelters;
condensation freezes when the weapon is taken back into the
cold
• Store weapons outside

270
c. (Slide 19) Fouling from Snow and Ice.
(1) To keep snow and ice out of a weapon, some type of cover is needed. Request muzzle caps
from the unit armorer, they are expendable and will do the job. If none are available, you may have to
improvise. Some ways of doing this are: using plastic bags, tape, or condoms. Keep ejection port
covers closed.
(2) Another recommendation is to carry something to de-ice a weapon should part of the weapon
become frozen. Windshield wiper fluid carried in a small bottle has been used successfully; aircraft
deicer and antifreeze are other options. Periodic cycling of the weapon will also keep parts from
freezing.
(3) Operate the action on weapons periodically. This can help identify icing issues.
d. Visibility Issues. A visibility problem can be encountered when weapons are fired in still air
conditions where temperatures are below –30°F. As the round leaves the weapon, the hot propellant
gases cause the water vapor in the air to condense. These droplets of condensed water vapor then
freeze, creating ice particles which produce a cloud of ice fog. This fog will hang over the weapon and
follow the path of the projectile, obstructing the gunner’s vision along his line of fire, as well as
revealing his location to the enemy. When faced with this problem, fire at a slower rate and/or relocate
to an alternate firing position.
Tests have shown that even in warmer temperatures, a fog will develop around the gun from hot gases
and the breath of the gunner, making it difficult to observe the strike of rounds. For crew served
weapons, the assistant gunner may need to take up a position further left or right to help with
adjustments. For individual weapons frequent changes in position may be required. When using optics
in the cold, care must be exercised to keep the users breath from condensing on the sight. Even the
warmth put out by the close proximity to the face can cloud the sight. Allow a stand off between the
eye and the sight. When taken from a cold to a warm environment the optics must be allowed to adjust
to the new temperature slowly to avoid cracking the lens.
e. Breakage and Malfunctions.

(1) Extreme cold causes metal and plastic to become more brittle than it is at warmer temperatures.
Breakage generally occurs early when a cold weapon is fired; the metal is heating and rapid, unequal
expansion of parts is occurring. Unit armorers will need to carry extra parts. Begin firing small arms at
a slow rate of fire in extreme cold weather, if the tactical situation permits. This will greatly reduce the
likelihood of the weapon malfunctioning.
(2) Freezing of moisture produced by sweating or the accumulation of snow or ice in the weapon
will also cause malfunctions and stoppages. After a weapon has been fired, the heat it has generated
can cause any snow or ice it comes into contact with to melt. This water will then re-freeze and may
cause the weapon to malfunction. Again a deicer can be used to thaw the weapon and keep it working
properly. Cycle the weapon periodically.

271
Solutions (cont.)
Fouling from Snow and Ice
• Use muzzle covers or improvise
• Use a de-icer for frozen weapons
Visibility
• Ice Fog at -30º F; difficult to observe strike of rounds; gives away position
• Frequent position changes may be needed or observer to spot/adjust
rounds
Breakage and Malfunctions

• Extreme cold increases the chance of metal and/or plastic component
failures
• Slow firing rates to allow the weapon to warm gradually

272
f. (Slide 20) Emplacement Issues. Crew-served weapons requiring some type of base or platform for
firing need special consideration. Emplacement of a weapon on snow, ice, or frozen ground, may
result in breakage, or inaccuracy because of sinking, or the inability to absorb shock. Emplacements
relating to particular weapons will be discussed in the section pertaining to that weapon.
g. Reduced Velocity and Range of Projectiles. As temperature drops, so does the muzzle velocity,
and thus the range of projectiles. This is because of a change in both internal and external ballistics.
(1) Internal Ballistics. This occurs inside the weapon; the burning rate of propellant decreases, thus
the rate of gas expansion decreases and in turn the rate at which the projectile moves down the barrel
decreases.
(2) External Ballistics. This occurs after the projectile leaves the muzzle. Decreased muzzle
velocity reduces the stability of the projectile as it leaves the muzzle, possibly causing the projectile to
tumble. At longer ranges this further reduces velocity and accuracy. Colder air is denser than warmer
air which may create increased drag on the projectile thus further decreasing range.

Solutions (cont.)
Emplacement Issues
• Deep snow and frozen ground present problems
• Various techniques discussed for specific weapons systems
Reduced Velocity and Range of Projectiles

• As temperature drops so does muzzle velocity and thus the range of
projectiles
• Internal Ballistics
• External Ballistics
• Re-zero weapons in extreme cold conditions

273
h. (Slide 21) Automatic Weapons have a high rate of breakage and malfunction due to cold weather.
Especially affected are the sear and bolt parts. Gun crews must carry extra parts of this type. One
common malfunction is short recoil where the bolt does not recoil fully to the rear. A second
malfunction is caused by the freezing and hardening of buffers. This causes great shock and rapid
recoil, increasing cyclic rate and can cause parts to break. All internal components and friction
surfaces of machine-guns should be coated with LAW. These small arms should be fired cold and dry
if LAW or CLP is not available. Firing should begin slowly at first to allow the weapon to warm; short
two or three round bursts at short intervals are sufficient until the weapon components warm.
Machine-guns should be test fired in cold weather prior to combat deployment to a cold weather area
of operations. Ammunition must be transported in enclosed drums or cans to prevent snow fouling. It
should be kept at the same temperature as the weapon. All weapons should be re-zeroed in extreme
cold. Some specific weapons considerations:
(1) 9mm Pistol
• Breakage of moving parts is rare, but some breakage of the extractor and the firing pin can
occur.
• This weapon is affected by condensation more than other weapons, due to the fact it is most
often carried by personnel whose duties require them to frequently enter and exit heated
shelters and vehicles. Freezing generally occurs around slide and magazine well.
(2) M16A2/M4
• Little breakage will occur if the weapon is fired at slow rate of fire until warm.
• Breakage usually occurs around the extractor, ejector, and firing pin.
• Condensation in the buffer tube will decrease the shock absorbing ability, which may result in
breakage or reduced recoil, which can result in the omission of the cocking step in the cycle of
operation. Wipe the buffer tube out frequently to remove condensation and reduce the chance
of having the weapon malfunction.
• Re-zero the weapon when deploying from a temperate to a cold environment. Cold
temperatures may cause a decrease in the burning rate of propellants, which can significantly
change projectile trajectories. In effect, this will nullify the zero of the weapon. Remember that
altitude will also have an effect on a weapon system, and when a significant change in altitude
occurs the weapon should also be re-zeroed.
• When wearing mittens or bulky handwear open the trigger guide for firing. Keep the trigger
guard closed but unlatched for safety when not in use.
(3) M249
• High rate of breakage due to the large number of moving parts. Armorers should carry plenty
of spare parts, especially those most prone to failure. (firing pins, extractors, feed pawls, etc).
• The M249 safety selector switch is extremely difficult to operate when the weapon is cold
soaked.
• Buffer group assemblies are affected in the same manner as the M16/M4. A common
malfunction is short recoil (bolt does not recoil fully to the rear) which occurs early in firing.
Apply immediate action procedures until metal warms.
• When changing barrels, avoid placing a hot barrel in the snow – the rapid cooling of the barrel
may warp it and will cause condensation to freeze in the barrel.
• The ammunition must be protected. Un-protected belts are a sure way to introduce ice into the
weapon when firing.
• Semi- permanent platforms may be constructed by attaching ski pole baskets or snowshoes to
the bipod. Ski pole baskets only work well in hard or compacted snow; issuing an extra
snowshoe without bindings to weapons crews is preferable.
(4) M240
• The same considerations as the M16/M249 apply to this system.
• Emplacement considerations may be more involved.
• For the bipod, apply the same techniques mentioned for the M249 (ski baskets or snowshoes.
Testing has shown that resting the weapon on a ruck does not provide a stable platform and
makes it difficult to operate from the kneeling (to low) or the prone (to high) position.
• For the tripod, the ahkio may be used as a platform. On hard ground or ice each leg will need
to be seated in a slot that is chipped out to fit the base of each leg. Ice screws or pitons driven

274
into frozen ground or ice and attached to the tripod legs with 550 cord may increase the
stability of the position.
(5) M2
• The same considerations as the M16/M249 apply to this system.
• For the tripod, see the techniques noted for the M240. Sandbags have also been used to
provide a stable platform for the tripod on hard ground, but tests have shown the bags to rip
after 300-400 rounds.
Rifles and Automatic Weapons

Re-zeroing required for all weapons systems
High rate of breakage; require test firing prior to deployment.
Units must carry extra parts
Short recoil and buffer freezing causes malfunctions
Begin with slow rate of fire

275
i. (Slide 22) MK 19 Automatic Grenade Launcher
(1) Use GMD lubricant at low temperatures.
(2) Use cloth covers rather than plastics to protect the weapon from the elements. In addition,
plastic or rubberized covers can become stiff or brittle in the cold. This may result in difficulty removing
them (especially when you must do so in a hurry) or in damage to the cover.
(3) Use the same techniques for the tripod as the M2/M240.
MK-19
Use GMD at temperatures below -25º F
Use cloth covers rather than plastics to protect the
weapon from the elements

276
j. (Slide 23) Mortars
(1) Hand protection must always be worn (contact gloves). The gloves must not be loose, because
when the ammo is being dropped into the tube, a vacuum occurs which can suck the glove into the
tube creating a hazardous situation.
(2) Breathing on sites, or on the mortar ballistic computer will cause fogging and freezing of
equipment.
(3) Muzzle and sight covers should be used when not firing the weapon to prevent snow and ice
from entering the tube.
(4) The Mortar Ballistic Computer is programmed to accept temperatures down to –50°F. This
automatically compensates for cold-induced slow burning of charges when computing firing data. The
MBC is not programmed for temperature inputs colder than –50°F.
(5) Aiming stakes will become loose when placed in snow. Utilize sandbags or an anchoring device
to keep them in place once set.
(6) Base plates become brittle when exposed to the extreme cold, this, coupled with the decreased
ability of frozen ground to absorb shock, results in base plates being more prone to breakage than
normal. Base plates must be dug in if possible, to prevent the base plate from skipping. Shock
absorbing materials such as spruce branches, sandbags, even ice chips or soil should be used for
absorbing recoil during firing, but not to an extent which will allow the base plate to bounce out of the
hole that has been dug for it. Demolitions may be used to prepare a firing position quickly (1.25 lb
block of C-4 works well). After emplacement base plates may be hard to remove.
(7) Swab bores thoroughly after each mission to remove any excess propellants.
(8) VT fuses are not preferred due to the severe dampening effects of snow. Airbursts are
preferred. Malfunctions will occur in direct proportion to the severity of the weather.
(9) The rubber tube cover may harden and become extremely difficult to remove as temperatures
fall.
(10) When firing in drop mode, expect greater number of misfires. Using the trigger will correct this.
Mortars
Temperature below 10°F, lube with LAW, (9150-00-292-
9689) instead of CLP, (9150-00-231-2361)
Wipe inside of bore dry before going out into the cold
Cover cartridges
Keep fire control instruments in their cases
Cushion base plate
Use anticontact gloves for dropped rounds

277
k. (Slide 24) M136 (AT-4) Antitank Weapon
(1) Plastic and rubber components become brittle and can crack in extreme cold.
(2) Ice fog and vapor trails will occur when weapon is fired.
(3) Gunner must wear a facemask or scarf when temperatures reach –15°F to prevent icing of sight.
(4) Sights are more difficult to release from their covers.
l. M220 Series TOW Weapons System

(1) Can be effectively used in temperatures down to –25°F; can be stored down to -65°F.
(2) Double the backblast danger/caution area size if the temperature is below 0°F.
(3) In extreme cold the heat from the engine can distort the image in the sight. Fire the weapon over
the back or side.
m. MANPADS (Stinger)
(1) Additional interrogation/tracking time will be required due to temperature-related diminished
battery performance.
(2) The Nickel-Cadmium battery must be fully charged.
(3) Double the backblast danger/caution area size if the temperature is below 0°F.
n. Javelin.
(1) The javelin has a slight drop when fired in the cold; be cognizant of this when using from defilade
or reverse slope positions.
(2) Can be effectively used in temperatures down to –25°F; can be stored down to -65°F.
Missile Systems
The TOW, Javelin and Dragon can be used down to -25 F
and can be stored down to -65
Double the back-blast area of all missile systems
The Javelin will drop when fired in the extreme cold; the
weapon should not be fired from defilade or reverse
slope positions

278
o. (Slide 25) Grenades.
(1) Fragmentation grenades suffer a reduced causality-producing radius due to energy dissipation in
the snow.
(2) Smoke grenades are useless unless placed on a platform to prevent them from sinking into the
snow. Taping or wiring a grenade to a stake which can be driven into the snow works well.
CAUTION: SOLDIERS USING GRENADES MUST ENSURE THAT THEIR GLOVES OR MITTENS
ARE DRY. FAILURE TO DO SO MAY RESULT IN AN ARMED GRENADE FROZEN TO THE
THROWER’S HAND.
p. Demolitions.
(1) C-4 hardens making it difficult to insert blasting caps. In extreme cold conditions, C-4 has
shattered from the blasting cap rather than detonating.
(2) Detonation cord becomes brittle and may break and will be more difficult to tie in cold weather.
(3) Time fuze tends to retain its curl and will break when unrolled.
(4) Condensation contributes to the incidence of misfires. Hangfire and misfire waiting times should
be doubled.
Grenades and Demolitions

Smoke grenades should be deployed on a platform,
hard ground or wired to a stake
Grenades may stick to gloves/mittens if either item is

wet
C-4, detonation cord and time fuse may need to be re-

warmed prior to use
Double hangfire and misfire waiting times

279
SECTION IV. SUMMARY
This lesson presented you with some basic considerations for firing and maintaining weapons in the cold
weather. During the remainder of the course you will have an opportunity to put these techniques and
procedures into action as you fire and maintain your weapon.
Check on Learning.
1. What should be used to lubricate weapons in the cold weather environment?
LAW is preferred because CLP thickens and eventually freezes at -35º F.
2. What is one consideration when taking weapons from a temperate climate to a cold weather
environment?
You must re-zero weapons because the ammunition does not perform the same at cold temperatures.

280
699-8033: Maintain communications and computer equipment in cold weather
Motivator: The operational environment today consists of specialized communications equipment as

well as computer equipment. This equipment is designed to be used in a field environment, but there
are techniques and procedures that you will need to use on order to use them effectively in the cold
weather environment.

ACTION Maintain communications and computer equipment in cold weather
CONDITION In temperatures of 32º F to -60 ºF, given communications and computer
equipment to maintain and operate
STANDARD Soldier identified common problems with communications and computer
equipment and took steps to reduce or eliminate problems caused by the
cold before/during/after operations.
disaster.
Evaluation: You will be tested on maintenance of communications and computer equipment in cold
weather during a one hour written examination at the conclusion of the course (Refer to training
schedule for date/time of exam). You must score a 70% on the written exam. If you fail the written
exam, you will be given a second exam after re-training has been conducted. If you fail this second
examination, you will be dismissed from the course.
Instructional Lead-In: This lesson will give you some common effects of cold on communications and
computer equipment as well as some tips and procedures to reduce or eliminate problems associated
with operating this equipment in the cold.
Maintain communications and computer equipment in cold weather

281
Learning Step/Activity 1 – Describe the effects of extreme cold weather on communications equipment
and describe techniques for ensuring communications equipment functions in the cold weather
environment.
The extreme cold in the arctic areas affects communication equipment both by reducing the
efficiency of certain components and by making operating conditions particularly difficult. The need for
regular and careful maintenance must therefore be combined with proper location and a particularly
high standard of operation.
a. (Slide 29) Signal Strength.

(1) Electromagnetic conditions in the Aurora Borealis can cause noise, suppress signals and cause
unusual wave propagation in radio communications; ionosphere+ 40-250 miles, electronically charged
region, depends on time of day and time of year.
(2) Fading and severe static can cause secure speech devices, such as KY-57 or ICOM SINCGARS
in secure mode, to lose signal and will require numerous re-transmissions to complete long messages.
(3) High Frequency (HF) wave propagation significantly deteriorates with changes occurring in the
ionosphere especially towards the evening hours, during sunspot activity, and auroral activity. On a
good day, HF communications between stations 100 kilometers or more apart might be limited to only
6 hours. This is due to radio wave absorption in the ionosphere.
(4) FM signals “line of sight” are not significantly affected by auroral activity. Under some conditions,
tactical FM radio communications will be increased by the affects of auroral activity.
Communications- Signal Strength

Aurora Borealis activity can adversely effect or absorb HF
signals
FM signals are not degraded; on occasion their range will be

increased.
b. (Slide 30) Radios.
(1) Radio equipment is susceptible to the same dangers from condensation (sweating and re-
freezing) as are weapons, with the added problem of internal condensation, which may take a long
time to dry, and which may damage circuits. Man-pack radio sets should not be brought into a warm
shelter, if the radio needs to be used, the radio should be placed outside in the rucksack, and the
handset placed under the tent flap so that the operator can monitor it. If the radio is to be brought
inside, it should be kept away from heat sources to prevent overheating and minimize sweating, and it
should be kept away from the doorway where cold air can enter, to prevent overcooling and rapid
temperature changes. Remember, you can't fieldstrip a radio like you can a weapon to get at that
condensation on the internal parts.

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NOTE: To prevent condensation from forming on objects moved from a cold to a warm environment,
place the object in a sealed non-breathable container. A plastic trash bag will suffice. This prevents
exposure of the object to the warmer environment. The condensation will form on the container
instead of the object. When the object is “room temperature,” remove it from the container.
(2) Breath shields such as battery packaging or a non-lubricated condom will prevent moisture from
freezing the internal components of handsets. A wool sock keeps snow and ice out while protecting the
operator from contact with cold plastic or metal.
(3) Communications equipment suffers from similar limitations as other battery powered equipment.
Batteries should be kept as warm as possible and a spare set should be kept warm and rotated as
required.
(4) Radio equipment becomes more sensitive to shock and vibration when it is very cold. Care
should be taken to avoid rough handling.
(5) Avoid overheating: do not place next to heaters such as the SHA. Over cooling can be a problem
if the item is placed directly on the tent floor or too close to the tent walls.
(6) After a radio has not been used and is cold-soaked, it is best to allow 3-4 minutes warm up time
prior to use.
Communications- R/T’s
Breath shields must be used on microphones
Batteries must be kept as warm as possible
Allow radios to warm for 3 to 4 minutes prior to operation
Place radios and switchboards off the ground and away
from tent walls
Radios exposed to extreme cold are sensitive to rough
handling
Keep radios away from high heat sources such as the SHA
or H-45

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c. (Slide 31) Wire.
(1) For all communications equipment, it is best to carry spare connectors, cables, handsets, as
these become rigid and inflexible and break easily at low temperatures.
(2) Wire communications lines should not be placed on the ground by ski trails that are used for
troop movement as a safety precaution. Wire should be elevated well above head level.
(3) Commo wire that is placed directly on the ground can be difficult or impossible to recover due to
freezing. The process of laying/recovering wire will be more time consuming in a snow covered region.
A method of marking the wire in snow is important.
Communications - Wire
Spare connectors, cables, and handsets should
be available
Wire communication line should not be laid on the

ground along ski trails
Wire may freeze, becoming difficult to recover

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d. (Slide 32) Antennas.
(1) Ice accumulation will de-tune and reduce the range for directional antennas. This effect will
increase with frequency. Radio operators will notice a reduction of range and increase in noise with
antenna equipment that is ice covered. Ice can be removed from antennas by shaking them
occasionally. Excessive ice can break or strain antenna components.
(2) Frozen ground presents a significant obstacle to erecting antenna masts. Angle pitons or 12 inch
steel tent pins make excellent substitutes for pegs which cannot be driven into the ground. Extra guy
wires or material should be carried to maintain antenna masts in high winds. Lashing masts directly to
trees can be an effective method.
(3) At temperatures below -20°F, RG-213 coax cable should be used. RG-8 coax becomes brittle
below this temperature and is prone to cracking when bent or strained.
Communications - Antennas
Any icing will detune and reduce range for
directional antennas; this effect increases as
frequency increases
Difficult to erect antenna masts; use pitons or steel
tent pegs; lashing a tree is effective
RG-213 Coax is recommended; RG-8 which cracks
at -20
Use of a counterpoise may be required

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(Slide 33)
(4) Antennas can develop precipitation static during snow or ice storms. This is caused by highly
charged snow or ice striking and transferring electrical charges to the antenna surface.
(5) Operators can receive heavy shocks from antenna leads that are not grounded. Antenna masts
and cables collect static electricity during high winds and snow storms, which can deliver this charge
through the connector.
(6) Magnetic declination can affect aiming of directional antennas. Radio operators must
compensate for the large declinations encountered in northern latitudes.
Communications- Antennas (cont.)

“Precipitation static”- flakes or pellets of highly charged
snow
Static shocks can result from leads of ungrounded

antennas
Orientation of antennas must take magnetic declination

into account

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e. (Slide 34) Grounding. Frozen earth does not offer an easy ground. Standard systems and
methods may be impossible to construct. Permafrost may be as hard as concrete and frozen earth
will have high electrical resistance. Use of existing grounds is recommended; such as pipes, buried
steel, etc. A hole must be made as deep as possible. This is best done with a shaped charge or
small auger, (at least 12 to 30 inches). The hole is filled with water to increase conductivity. Salt
should be added to the water to further increase conductivity. It may not be possible to recover the
ground rod until thawed when using this method. It is also possible to obtain a good ground by boring
a hole in a frozen stream or pond to submerge the electrodes in the water below. Another approach is
to find a tree with a substantial root system. A makeshift ground can be made by driving a large metal
spike deep into the tree and using the tree’s sap to establish contact with the ground water in the
surrounding soil. The most effective tactical ground system to use in frozen areas is the Surface Wire
Ground System (SWGS). This system consists of pins connected together with cable to form a
grounded grid.
Counterpoise- a conductor or system of conductors used as a substitute for ground in an antenna

system
Communications- Grounding
Frozen ground offers high electrical resistance;
permafrost obstructs ground rods
Do not use ground or counterpoise for more than
one transmitter or electrical system
Ground rod must be driven deeply into ground or
through ice to water; tree spike method is also
effective
Use Surface Wire Ground System (SWGS)

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SECTION IV. SUMMARY
Check on Learning.
1. What effect does the Aurora Borealis have on communications?
It can absorb and therefore adversely effect HF communications. It can also enhance HF and FM
communications.
2. What is a consideration when orienting a directional antenna?
You must figure in the large magnetic declination present in northern latitudes.

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699-8020: Move over snow on skis
Motivator: While it is unlikely that you will use skis on a foreign battlefield, it is a fact that you will train
to fight here in Alaska. For much of the year the terrain is snow-covered. During training exercises, if
you do not have either skis or snow shoes, you will be at a distinct disadvantage and training will be
confined in and around cleared roads and trails. Skiing is also an excellent means to conduct physical
training with the added benefit of additional cold weather training.

ACTION Move over snow on skis
CONDITION Given the military ski, NATO bindings, ski poles and vapor barrier boots (or
other appropriate ski equipment as prescribed by unit), rucksack (with a
minimum load of sleeping bag, sleeping pad, extra pair of socks, extra pair of
mitten inserts and wax kit, additional packing list items may be prescribed by
unit), ECWCS, other issued cold weather clothing items, ballistic helmet, LCE
with 2 quarts of water, weapon and a 10 kilometer snow-covered course with
varied terrain
STANDARD Soldier:
- completed a 10 kilometer ski movement
- did not sustain a cold weather injury
plan
Safety Requirements: Daily Risk Assessment conducted. Medical personnel must be on site during
all ski training events. OIC/NCOIC must have medical evacuation plan ready for soldiers injured
during ski training.
Risk Assessment: Medium. May be upgraded based upon weather/terrain conditions.
Environmental Considerations: Refer to MSDS sheets for specifics on waxes, ski base cleaners in use
in the NWTC ski room. Ensure that manufacturer recommendations are adhered to when using these
products.
Evaluation: You will be evaluated on your ability to complete a 10K ski movement with no cold
weather injuries. Students with prior skiing experience may not test out. The reason for this is that all
students must understand the logical progression of a ski training program as conducted by the
military. Students that fail WILL NOT have the opportunity to re-test.
Instructional Lead-In: During this period of instruction you will learn the nomenclature, maintenance
and fitting of your skis. Once your skis are fitted you will learn the techniques to move over snow
covered terrain.
Move over snow on skis

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Enabling Learning Objective A:

Ski Lesson 1: Introduction and Fundamentals
ACTION Prepare Skis and Skiers for travel over snow
CONDITION In an appropriate maintenance facility (for preparation, fitting and
maintenance of skis) and on flat snow covered terrain with military skis,
bindings, poles and appropriate boots for temperature range (as
determined by instructor during daily risk assessment) (or other
appropriate ski equipment as prescribed by unit)
STANDARD Soldier properly fit skis, ski bindings. Soldier waxed skis for current
conditions. Soldier stretched prior to ski training. Soldier demonstrated
proper athletic stance, proper use of ski poles, proper controlled falls
and recovery from falls, walking and shuffling on skis and step and kick
turns on skis.
Learning Step/Activity 1 – Describe skis and bindings and describe the military ski and NATO 120
binding.
a. There are many skis on the commercial market today. Classic cross-country, skate cross-country,
backcountry wax less, backcountry waxable, Nordic, alpine, telemark, fat skis, skinny skis, and twin
tipped skis and the list goes on. Don’t forget about boots, poles and bindings. Selection of a single pair
of skis for military purposes can be a daunting task. Because the purpose of military skiing is to move
troops cross country in snow covered terrain, the ski should provide flotation for soldiers carrying
heavy loads, allow them to move cross country over unbroken trail and have metal edges to allow
soldiers to make turns to control speed on downhill sections. There are no skis or ski poles in the Army
inventory; the policy is that units with the need for skis can obtain them through contract purchase.
The NATO binding is available; the only dealer resource for the NATO binding is through Norsk
Enterprises (847-854-6074 or jsarles@norskent.com). Black Diamond (www.bdel.com) makes
collapsible ski poles with a fool proof locking mechanism called the flick-lock. It is better than most
other designs where the locking mechanism is inside the pole making it difficult to repair.
b. Parts of a ski:
(1) Tip. In your ski tips there is a hole that can be used to drag skis or improvise a litter.
(2) Shovel. Upturned portion of the ski that provides flotation on snow by keeping it on the surface of
the snow.
(3) Waist. This is the middle third of the ski.
(4) Tail. Back of the ski. The metal groove cut into the tail on some skis is for climbing skins.
(5) Base. Plastic bottom of the ski.
(6) Edges. Metal rails on the sides of the ski. They are used to grip the snow in a turn.
(7) Side cut. Difference in width at the shovel, waist, and tail. It is not used in all skis. Cross-country
skis will have little or no side cut, whereas Alpine skis can have very dramatic side cut. More side cut
means easier turning.
(8) Camber. The bow or concave arch in the middle of the ski. The amount of camber will determine
the use of the ski. A single camber ski is best suited for downhill skiing, but will perform as a cross-
country ski. Double camber skis are suited for groomed trail cross-country use only and are only
marginally effective for downhill use. The only true double camber skis are classic cross country racing
skis which are not appropriate for the backcountry.
• A camber and a half (also known as Nordic camber), creates an arched and stiff section in the
center of the ski. This forms a center wax “pocket”. A soft wax is applied to this area of the ski.
This forms an area that will grip the snow, thus giving you traction and allowing you to kick to
move yourself forward. Nordic and cross-country skis often have a groove down the center
base of the ski. This groove allows the skier to track in a straight line.
• Single camber skis, (also known as alpine camber), distribute the weight more evenly over the
entire running surface of the ski. It also allows a rebound effect from turn to turn. When flexed

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(that is when you are standing on them), alpine cambered skis should from a smooth arc with
no wax pocket. The military has generally selected a ski with single camber to a camber and a
half.
(9) Top sheet. Top portion of ski that covers the core. Painted white for camouflage.
(10) Core. Wood or plastic guts of the ski. Gives the ski its load bearing capacity.
Tip
Shovel
Base
Top sheet
Edge
Waist
Tail
Military Ski w/ NATO 120 binding
Toe strap
Front throw
Cable
Binding tension adjuster
NATO BINDING

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Wingnut
Toe plate
Locking plate
Line
Adjustable side plates
Detail of NATO Binding
Learning Step/Activity 2 – Issue the appropriate ski to Soldiers.
a. Military skis come in sizes, 180 to 200 cm. Soldiers who weigh less than 150 lbs use 180 cm and
over 150lbs use 190cm. Soldiers 200lbs or more use 200cm skis.
Learning Step/Activity 3 – Issue the appropriate ski poles to Soldiers.
a. Ski poles are issued by measuring the pole against the Soldiers shoulder. The pole should reach
or come close to the point of the shoulder. Under six feet use 54” poles. Over 6 feet use 58” poles.
Learning Step/Activity 4 – Maintain skis.
a. Cleaning- The first thing in ski maintenance is to clean any wax and dirt off of the base. This can
be accomplished by using Simple Green or a Citrus Cleaner made for skis. Apply the cleaner liberally
to the ski base. Then using a ski wax scraper, scrape old wax off. When using a scraper insure that it
rides on the edges so that it does not gouge the base of the ski. Once this is done there may still be
wax remaining. To remove it simply reapply the cleaner and using a green scratch pad or equivalent
item, rub wax off of the base and dry with a clean paper towel. If any wax remains in a gouge in the
ski base than remove it carefully with the comer of a scraper or a fingernail.
b. Once the base is clean, take a simple mill bastard file or a ski edge tuner and file the edges to a
90-degree angle, removing any burs in the edges. Next round the edges from the tip to just past the
shovel and from the tail six inches toward the waist. These areas of the edges do not need to be
sharp. At this time if any repairs need to be done the ski is ready. First take a true bar or any straight
edge that will not bend. Start at the tip of the ski. Place the true bar across the edges and look for
light under the bar. Now work toward the tail. If the ski base is flat, there should not be any light under
the bar. If there is light under the ends of the true bar, the base is convex and the plastic or P-tex
base should be taken down with a plastic or metal scraper. If there is light in the middle, the edges will
need to be filed until they are flush with the base.
c. If there are scrapes or gouges in the base then take a P-tex repair candle, which matches the color
of the ski base, for the repair. Light the repair candle over the flame of a regular candle. Then hold
the repair candle over a metal scraper until a blue flame appears. By rotating the repair candle

292
between the thumb and forefinger, dark soot deposits will be minimized. Hold the repair candle close
to, and parallel to, the ski to maintain the blue flame. Once the gouges have been filled in, allow the
repairs to cool to the touch. Next scrape the ski base with a scraper to remove excess P-tex until the
base is smooth. Now the ski base is ready to wax. If more severe damage has occurred and cannot
be repaired then exchange the skis, or take them to a ski pro shop for professional repair.
d. All metal should be kept free of rust.
e. Inspect binding for broken parts and replace as necessary.
f. The ski pole requires less maintenance than the ski. Simply repaint when necessary. Replace ski
pole baskets when they are damaged. Make sure that the wrist leashes are there and that they are
serviceable.
Learning Step/Activity 5 – Fit the NATO binding to the Vapor Barrier Boot (or other issued boot as
required).
a. There are four different cable lengths used with the NATO 120 binding, each with a different color
heel piece over the cable. Cables can be interchanged from one binding to another. NATO 120
bindings are produced by Rottefella and are available at www.rottefella.com The following is an
approximate listing of the Vapor Barrier boot sizes the cables fit:
Cable color Boot size

Red 6-9
Yellow 8-11
Black 10-13
Blue 11-15
b. To fit the binding to the boot:

(1) Loosen wingnut to free adjustable side plates.
(2) Place boot In binding so that the toe of the boot is in line with the line on the locking plate
and the heel is centered.
(3) Adjust side plates so that there is maximum contact with the sides of the boot. Engage the
locking plate and tighten wing-nut.
(4) Adjust binding tension adjuster so that the cable is within 1/2 inch of the heel tab with the
front throw in the open position.
(5) Adjust toe strap to keep the toe firmly in the binding, but not too tight as to restrict
circulation.
(6) Remove boot and carefully adjust side plate’s inward one notch. Reengage locking plate
and re-tighten wing-nut. Adjust wing nut so that its long axis is perpendicular to the long axis
of the ski. This will minimize damage to the toe of the boot.

293
Learning Step/Activity 6 – Prepare skis for movement (Wax skis).
a. Waxing. Military skiing needs a method that is simple and effective. The two wax system,
supplemented with klister provides maximum performance for most conditions while minimizing the
amount of wax carried. Wax works when pressure is applied to the ski in the snow. Snow crystals
penetrate (grip) the wax giving the ski traction on the flats and uphill. When the pressure is released
and the ski is slid forward, the snow crystals release the wax and the ski glides on a thin film of water.
The film of water is formed by the friction between the ski and the snow. If the correct wax is applied
properly, the snow crystals will grip during the kick and release during the glide. The ski will be too
slippery if the wax is too hard or too thin. If the wax is too soft or too thick, the ski will be too
sticky.
b. The two wax system is designed for a wide range of temperatures and conditions. A hard wax for
dry, powder snow below freezing. A soft wax for wet, powder or packed snow, above freezing. First
select the proper wax for the temperature and snow condition. Remember, if a hard wax is applied
first, then a soft wax can be applied over it. But there is no way to apply a hard wax over a soft wax
for it to be effective. It is like putting peanut butter over jelly. Next crayon the wax evenly over the
entire base of the ski, six inches from the tip to within six inches of the tail. Using a cork (natural or
synthetic) spread and smooth the wax on the ski base. Applying several light coats is better than one
thick coat. If you do not have the cork then you can use a leather glove or the trigger finger mittens.
c. If skis are too slippery and are not getting any grip, apply the TLC principle one step at a time until
the desired effect is met:
• Thicken the layer of wax,

• Lengthen the amount of wax in the middle 1/3rd of the ski
• Change to a different wax.
d. If the skis stick and will not glide, use a scraper to remove some of the wax.
e. Use the two wax system for snow in its original state. Use klister for snow that has melted and
refrozen, or very old, wind hardened or crusty. There are two types of klister to match conditions.
Universal, for changing corn snow conditions from 23 degrees to 50 degrees Fahrenheit. Green, for
extremely cold conditions on old or refrozen snow. To apply klister, simply apply two thin strips to the
waist of the ski. Then quickly spread the klister over the ski base with a plastic scraper.
f. Applying wax to a ski is best accomplished in a warm place with a warm ski. Cold temperatures
and frozen skis make it difficult cult to apply wax.

294
Learning Step/Activity 7 – Stretch and warm-up for skiing.
As in any athletic activity, you should stretch and warm-up prior to beginning any ski activities.
Some of the stretches and warm-up exercises that are appropriate are:
(1) Hamstring stretch.

(2) Thigh stretch.
(3) Calf stretch.
(4) Side Straddle Hops.
(5) High jumper.
Carrying a weapon. Attach the sling to the rear sling swivel and the slip ring (where the hand guards
attach to the receiver). Hang the weapon over your neck and firing side shoulder, muzzle down. The
weapon can be placed behind the canteen on the firing side hip to keep it out of the way while using
ski poles. Or attach the sling at the slip ring and the small of the butt stock and hang in the same
manner. Another method is by use of a “three point sling” available commercially.
Learning Step/Activity 8 – Demonstrate the athletic stance.
NOTE: Start with the students on line. Students do not need poles at this point. Ensure that the wind,
sun or any other distractions are to the student’s back. This is applicable whenever talking your
students through any of the ski lessons.
a. The athletic stance is a stable, relaxed, in balance position that allows you to react quickly and
easily. To do it – relax your back muscles and cup your upper body pulling your navel in towards your
backbone. Your weight should be centered over both your feet and your feet should be about
shoulder width apart. The ankles should be flexed and the knees slightly bent. Think about catching a
basketball with both hands – this will put your arms and hands in the correct position.
b. Get the feel for having skis on your feet. Try picking up one ski at a time. Push the toes down
towards the ground and then raise the toes up. Now rotate the ski to the left and right. Try it with the
other ski. This is rotary motion and will help you point the ski in a desired direction.
c. In the athletic stance rock back and forth on your skis from your heels to your toes. You should
feel in control. Now stand straight up, arch your back slightly and try the same thing.
NOTE: Some students may fall. Good transition to the next LSA.
Learning Step/Activity 9 – Demonstrate proper controlled falls and recovery on flat snow covered
terrain.
a. Controlled falls can help to prevent injury.
b. The easiest method is to just sit down. Attempt to keep the skis parallel and relax into a seated
position. The idea is to land on the buttocks, and the meaty portion of the thigh and calf.
c. Recovery is easier with poles but not necessary. First pull the skis under the hips.
Then holding both ski poles together with the baskets in the snow, grasp the poles with one hand just
above the basket and one hand near the top of the poles. Now pull up off the snow. As the hips leave
the snow, step towards the ski baskets with the ski closest to the baskets and begin to stand up. On a
slope the procedure is the same, but to start, you must ensure that the skis are below the body (further
downhill) and perpendicular to the fall line. The uphill ski will be used to stabilize you as you stand up.
If you lost a ski(s) in the fall, you should get to a standing position, and then put the skis back on,
replacing the downhill ski first.
Learning Step/Activity 10 – Walk on flat snow covered ground using skis.

295
Do not use poles. Begin walking as you would in marching. Skis should remain flat on the snow.
Transfer your weight smoothly from ski to ski. As you walk, the heel of your boot should rise naturally off
the ski. Look a few feet in front of your ski tips.

296
Learning Step/Activity 11 – Shuffle on flat snow covered ground using skis.
a. To transition from walking to shuffling, simply add a glide to the step. Insure proper balance and
weight shifts are taking place. Keep the length of the glide small – in other words try to stay balanced
over the skis. Shuffle in a straight line and then in a circle.
b. Drills
(1) Scooter- Have student use one ski at a time without poles. Push with free foot and glide on the
ski. Used to reinforce the glide in the shuffle and maintaining ankle alignment.
(2) Walk shuffle walk- As stated. Used to reinforce the difference between walking and shuffling.
Learning Step/Activity 12 – Demonstrate proper pole usage.
a. Ski poles are mainly used for aiding in balance. However they can also be used to provide
propulsion.
b. It is important to understand how to hold the ski pole. Bring the hand up through the wrist leash
and place the thumb over the wrist leash where it attaches to the top of the ski pole. Failure to follow
this procedure may result in a broken thumb in the event of a fall. Adjust the straps so that they are
snug through the palm of the hand.
c. While walking, the ski pole is placed even with or slightly ahead of the opposite foot. For example,
the right foot and the left pole, left foot and right pole. This allows establishing timing and rhythm. To
provide propulsion simply give a push with the ski pole in the trail position. After a short glide the
opposite pole should be planted. Avoid squeezing the poles as this forces blood out of the fingers.
Learning Step/Activity 13 – Demonstrate the step turn.
The step turn is accomplished by opening the ski tips in small steps. To turn to the right move the
right ski tip a few inches to the right. Then move the left ski tip until you are back in the athletic stance,
with skis parallel. Continue to do this until you make it to the desired position. This is the simplest
turning method and is easiest to master. This turn is also known as the star turn for the shape that is
produced in the snow after execution of a turn.
Learning Step/Activity 14– Demonstrate the kick turn.
This turn is more difficult to master. This turn is used to reverse direction. The ski poles are used for
balance. In this demo we will initiate the turn with the left ski. With your left hand plant your left pole
behind you and between the tails of your skis. Plant your right ski pole between your skis. Pick up the
left ski and rotate your leg 180 degrees so that the feet and skis are facing opposite directions. Now
pick up your right ski and rotate it 180 degrees to match the left ski bringing your right hand and pole
with you as you make the turn. On sloping terrain, always initiate the turn with the downhill ski.
NOTE: At the completion of this lesson, the instructor can move to ELO B or ELO C if snow-covered
downhill terrain is not available.

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Enabling Learning Objective B:
Ski Lesson 2: Hill Climbs and Gentle Descents
ACTION Climb and descend gentle (less than 20º) snow covered hills without
turning
CONDITION On gentle snow covered terrain with military skis, bindings, poles and
appropriate boots for temperature range (as determined by instructor
during daily risk assessment) (or other appropriate ski equipment as
prescribed by unit)
STANDARD Soldier demonstrated ability to walk uphill, traverse hills (parallel and
half-herringbone), and ascend hills using the side step and herringbone
technique. Soldier demonstrated controlled falls and recoveries on
sloping terrain. Soldier demonstrated kick turns and herringbone turns.
Soldier demonstrated straight runs in parallel stance and telemark
stance. Soldier demonstrated step turns during a downhill run. Soldier
demonstrated a gliding wedge and a braking wedge.
Learning Step/Activity 1 – Climb (Walk) Uphill on skis
NOTE: This task will reinforce the need to properly wax skis.
Apply the techniques learned in ski lesson 1 to begin walking uphill. Take small steps and ensure that
you place the ski flat on the snow and weight the ski by pressing the ski into the snow with the front of the
foot. Some common problems are not fully weighting the ski causing it to slip backwards. Shorten your
step and press firmly into the snow; sometimes you may need to slap your ski onto the snow surface.
You are trying to get the wax to adhere to the snow, temporarily giving you traction. If all else is being
done properly and you are still slipping, you need to adjust your wax.
Learning Step/Activity 2 – Demonstrate controlled falls and recovery on sloping terrain.
NOTE: After students move uphill, have them practice controlled falls and recovery.
a. The easiest method is to just sit down. Attempt to keep the skis parallel and relax into a seated
position. The idea is to land on the buttocks, and the meaty portion of the thigh and calf.
b. Recovery is easier with poles but not necessary. First pull the skis under the hips.
Then holding both ski poles together with the baskets in the snow, grasp the poles with one hand just
above the basket and one hand near the top of the poles. Now pull up off the snow. As the hips leave
the snow, step towards the ski baskets with the ski closest to the baskets and begin to stand up. On a
slope the procedure is the same, but to start, you must ensure that the skis are below the body (further
downhill) and perpendicular to the fall line. The uphill ski will be used to stabilize you as you stand up. If
you lost a ski(s) in the fall, you should get to a standing position, and then put the skis back on, replacing
the downhill ski first.
Learning Step/Activity 3 – Ascend hills using the herringbone and sidestep techniques.
NOTE: Explain the concept of fall line to the students at this point. The fall line is the natural line a ball
would roll if you placed it on the slope and gave it a push.
a. On short steep sections, of the slope the herringbone is an effective way to gain elevation.
However, this method quickly fatigues the leg muscles and is difficult to sustain for long periods.
b. Face uphill with the ski tips spread wide to form a V with the skis. Then rotate the knees inward to
put pressure on the inside edges of your skis. Now shift your weight to one ski and move the un-
weighted ski forward a short step. Shift weight to the advanced ski and edge it inward. Repeat this
process using the ski poles for balance in order to make progress uphill. Watch the ski tails; stepping
on them can make you lose your balance and fall.
c. On very steep sections, the side step can be used. Place yourself perpendicular to the fall line
with the uphill edges of your skis engaging the snow slope. Shift weight to the downhill ski. Now take

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a short step with the uphill ski. Shift weight to the uphill ski and bring the downhill ski parallel with the
uphill ski. Poles are used for balance. Short steps allow proper weight shift and prevent loss of
balance or falls. The side step is also an effective method to go downhill and provides the most
control on a steep section that you may not be comfortable with.
Learning Step/Activity 4 – Traverse hills with half-herringbone technique.
For long movements up a sustained slope, the best method that will cause the least amount of fatigue
is the traverse. When traversing uphill, keep the uphill ski in the direction of travel. The downhill ski is
placed in the best position to maintain balance and traction while walking. If looking at the skis, the
downhill ski resembles a half herringbone position. Make sure that the direction is not too shallow (no
elevation gain) or too steep (straight uphill is too fatiguing). Find a happy medium.
Learning Step/Activity 5 – Demonstrate a kick turn on a slope.
At times there will be a need to change direction. The same kick turn that you learned on flat ground
is effective for changing direction on a slope. To maintain your balance, always initiate with the
downhill ski. Everything else is the same as on flat ground.
Learning Step/Activity 6 – Demonstrate a herringbone turn on a slope.
a. At times there will be a need to change direction. The kick turn on a slope is difficult to master. The
easiest way to change direction is to transition from a traverse to a herringbone facing up the fall line and
slowly moving around into a traverse in the opposite direction. You may need to exaggerate the
herringbone position to maintain a grip on the snow.
Learning Step/Activity 7 – Demonstrate straight downhill runs in both the parallel stance and telemark
stance.
NOTE: Choose terrain that has a very gentle slope and has a natural run-out (i.e. no obstacles, and
flat ground at the end of the slope that will naturally allow the students to come to a stop).
Demonstrate to the students that you will come to a stop gradually without any effort on their part (i.e.
they don’t need to know how to stop).
NOTE: There are four fundamentals to skiing that must be mastered: BALANCE MOVEMENTS,
ROTARY MOVEMENTS, and EDGING MOVEMENTS AND PRESSURE CONTROL MOVEMENTS.
Explain these to students and define each one. It will help as you try to make corrections on
technique.
NOTE: Establish a start point for students with two ski poles to serve as a gate that students can use
for balance. This is necessary because students will not use poles at this point.
a. The bull fighter stance: You need to side step into position uphill from the start point (poles).
Grasp the poles and maneuver your skis so that they are parallel and pointing down the ski slope.
From this position, slide one ski back and forth over the snow to remove any snow that has built up on
the base. Now repeat with the other ski.
b. Release the ski poles and shuffle forward. Once the skis start to move, relax, and focus on the
athletic stance and keeping your weight centered over both feet. You should feel the weight more on
the balls of the feet than the heels. Once you come to a stop, turn around come back up and do it
again.
c. As this gets easier try a few things. Shuffle your feet back and forth without lifting your heels. Try
standing on one foot then the other. Hop up and down. The point is that you need to stay ready for
anything not locked into a rigid stance.
d. DRILLS:
(1) Beat boots as the student move down hill. Helps with pressure and balance.

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(2) Throw a football to the student as they are moving downhill. This keeps the hands in the correct
position. Also get the eyes off the ski tips, a common mistake at this point.
(3) Ski on one ski.
(4) Reach down and pick up a glove from the snow.
(5) Ski under a ski pole - the ski limbo.
e. Demonstrate the telemark position when students have mastered the above. The stance is the
most important part of learning to telemark ski:
(1) One ski/foot will be downhill (also know as the front foot or outside ski). Your knee should be
directly above your toes of your front foot. Both the ankle and the knee should be bent giving you a
forward cant. Your front foot will be hidden from view by your font knee when you are in a good
telemark position.
(2) The uphill foot or back foot is bent at the toe with the heel lifted off the back ski. You support
half your weight with this ski and half with the front ski. Ensure that you are standing on the ball of
your foot and not your tippy-toes Try to keep the heel of the back foot as low as you can but still off the
back ski. Both knees should be snugged up together. You thighs should be at an angle to the snow.
Your butt should be over the heel of your back foot.
Note: Have students do the “1000 telemarks” down the ski slope. This involves rising up and
transitioning to the telemark stance with the left (or right) foot forward, then sinking into the telemark,
then rising up transitioning to right foot (or left foot) and repeating until the student is proficient in
transitioning. Kind of like iron mikes on skis, but the stance is tighter.

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Learning Step/Activity 8 – Step turn during a downhill run.
At times there will be a need to change direction. The simplest means of doing this is to begin by straight
running and place all the weight on the ski opposite the desired direction of turn. Now lift the other ski,
opening the tip slightly toward the desired direction of turn. Shift weight onto the ski that you just moved
on match with the other, now un-weighted ski. Continue until you have made the desired direction
change.
Learning Step/Activity 9 – Demonstrate the gliding wedge.
a. The gliding wedge is the foundation from which all other ski instruction progresses.
NOTE: On flat ground demonstrate a good wedge.
b. Start with skis parallel; now push the ski tails of the ski apart until they form an inverted V shape.
The tips of the skis should be about six inches apart.
NOTE: Show students narrow to wide wedges.
c. As you vary the size of the wedge, you will change the amount of pressure on the inside edges of
the ski. A larger V means more edge pressure. A good athletic stance is important, no matter how
wide or narrow the wedge; this means that your ankles and knees are flexed. You should start in the
bullfighter stance we used earlier for straight runs and after you push off you will apply pressure to the
inside of the skis and form the wedge. Glide in this position until the terrain flattens out, turn around,
come back up and do it again.
d. Your edges should engage very little in the gliding wedge; the ski should be relatively flat in
relation to the snow.
e. Common errors and fixes:
(1) Straight legs. Flex at the knees and ankles. Beat boots while gliding.
(2) Student turns. Weight is not centered over both skis. Feel the weight centered over both heels.
(3) Knees together causing too much edging. Flatten skis. Simulate holding a beach ball between
the knees.
Learning Step/Activity 10 – Demonstrate the braking wedge.
NOTE: On flat ground demonstrate a good braking wedge.
a. Start with skis parallel; now push the ski tails of the ski apart until they form an inverted V shape.
The tips of the skis should be about six inches apart. Knees should be holding a basketball; this gets
the skis on edge.
NOTE: Show students narrow to wide wedges.
b. To form a braking wedge, push the knees inward while pushing the ski tails outward to engage the
edges of the ski. Maximum braking occurs when the V formed by the ski is wide, the knees are
angulated inward and the weight is shifted to the heels of the foot. This will increase pressure on the
inside edge of both skis. This technique is used to stop!
c. Common errors and fixes:
(1) Straight legs. Flex at the knees and ankles. Beat boots while gliding.
(2) Student turns. Weight is not centered over both skis. Feel the weight centered over both heels.
(3) Cannot brake. Edges not engaged. Have student exaggerate knee and ankle flex and decrease
the distance between knees.

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d. Drills: Once students have been shown both techniques, have them perform gliding wedge to
braking wedge at an area you choose. Also have students go from straight run to gliding wedge to
braking wedge and back to straight run. Ski poles can be used as a stop sign for places you want the
students to transition to a braking wedge.

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Enabling Learning Objective C:
Ski Lesson 3: Basic Cross Country
ACTION Move on skis over gentle snow covered terrain (Double Pole and
Diagonal Stride)
CONDITION On gentle, rolling snow covered terrain with military skis, bindings,
poles and appropriate boots for temperature range (as determined by
instructor during daily risk assessment) (or other appropriate ski
equipment as prescribed by unit)
STANDARD Soldier demonstrated the diagonal stride. Soldier demonstrated double
poling.
Learning Step/Activity 1 – Demonstrate the diagonal stride.
NOTE: If time allows or you want to focus on cross country skills, you can move directly into Ski
Lesson 3 from Ski Lesson 1.
a. The basic movement of the diagonal stride is the walking step. Forward motion and glide are
increased when more effort is applied to the step. The added effort is obtained by a push off
coordinated with an increased push from the ski poles.
NOTE: Begin diagonal stride in a flat open area without using ski poles. Tell students to use swinging
arm movements for rhythm and timing.
b. Start by leaning forward with a good athletic stance. Then shift weight to the right ski. Next slide
the left un-weighted ski straight forward by a springing motion from the ankle, knee and hip,
straightening the body and shifting the weight to the left ski.
Complete the motion by straightening the right knee and pushing off from the right foot; this will also
complete the weight shift. Keep the weight on the gliding left ski and as the glide nears completion,
bend the left knee and ankle in preparation for the next push off. Meanwhile the right ski is moved
forward in preparation for the next step. As the right ski comes parallel to the left ski, the next step is
made with the right ski by pushing off with the left ski.
c. Using the ski poles can increase the amount of glide. The ski poles are used in the same manner
as when marching or walking; that is right ski pole is forward when the left leg is forward and the left
ski pole is forward when the right leg is forward. While pushing off with the right foot the left pole is
simultaneously planted and the muscles of the arm and shoulder are used to push from the ski pole
and propel the skier forward. The right ski pole is used when pushing off with the left foot.
d. The entire motion of the diagonal stride should be a smooth, rhythmic flow of motion. Timing is the
key and this is the area that you should focus on.
e. Drills:
(1) Practice without poles first, using the arms for balance and timing.
(2) Practice diagonal poling while gliding on both skis.
(3) Have students count 1,2,3,4, 1,2,3,4 to develop rhythm and timing.
(4) Use different tempos, ride the glide.
(5) Shuffle with a pause. Shuffle with a pop.
f. Common Errors and Remedies:
(1) Shuffling. This indicates uncertainty with balance. More time on skis and drills without poles will
help with balance.
(2) Ski tips slide backwards. This indicates poor timing, improper weight shift or improper waxing of
skis. Have students count to develop a rhythm. Try to push down on the ball of the foot rather than back.
Imagine smashing a bug. Student may need to adjust wax.

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Learning Step/Activity 2 – Demonstrate double poling.
a. Start on flat ground with skis parallel. Use both arms in a coordinated effort with an upper body
compression to produce propulsion. Ensure that the pole plant is done with the pole grip ahead of the
pole basket.
b. Drills:
(1) Double pole with arms only.
(2) Double pole with body compression only.
(3) Double pole with arms and body.
c. Common Errors and Remedies.
(1) Weight is on the backs (heels) of skis. Student is not using the athletic stance.
(2) Double poling with the arms only. Use body compression and arms.
Learning Step/Activity 3 – Demonstrate double pole with kick.
Start out on flat terrain. Review diagonal stride and double poling. Now begin by walking and double
poling. Explain that the kick can be timed before, during or after the poling. Move slowly at first until
timing and rhythm fall into place, then increase propulsion. Switch kick foot from left to right and back
to left, using different sequences. You will get a continuous fluid ‘classic’ cross country movement with
this technique.

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Enabling Learning Objective D:
Ski Lesson 4: Basic Nordic Downhill and Intermediate Cross Country
ACTION Demonstrate wedge turns to control speed on gentle to moderate
(between 20-30º) snow covered terrain. Combine basic cross country
techniques to move efficiently over gentle to moderate snow covered
terrain (Double Pole with Kick)
CONDITION On gentle to moderate snow covered terrain with military skis, bindings,
STANDARD Soldier demonstrated linked wedge turns, side slips, and the ability to
ride the lift. Soldier demonstrated double pole with a kick and
appropriate cross country techniques for the terrain.
Learning Step/Activity 1 – Demonstrate wedge turns.
NOTE: This LSA is performed without ski poles.
a. Turning is one method used to control your rate of descent. To turn simply begin in a gliding
wedge and turn in one direction to create a small “C” in the slope.
NOTE: Set a ski pole out about 10 meters down slope from your position. Have students initiate the
turn when they reach this pole.
b. Steering is physically turning the ski with your foot. While moving in the gliding wedge, actively
steer the opposite ski towards the desired direction. This will become your outside (or downhill ski). If
you want to turn to the left, actively steer the right ski. Remember that rotary movement we tried in Ski
Lesson 1. While you are moving, this rotary motion will help you steer or point your ski in the desired
direction.
While steering this ski, place additional pressure (weight) on the steering ski by flexing at the ankle
and bending the knee. This will increase the edge pressure on the outside ski and you will begin to
turn (imagine that you are squashing a bug with your outside foot). The inside ski should be kept
relatively flat as you make the turn. Turn around the pole, come to a stop, walk uphill and repeat the
process on the same side.
NOTE: Transition to the other turn only after students have mastered the first (left or right) turn.
c. Now that you have the basic concept down, we will have you un-weight your skis prior to actively
steering. Rise to initiate the turn, then sink or flex to execute the turn. Gradually round the turns out
from a small “C” to a large carved “C”. For this portion of training you will start in one direction and as
you cross the fall line, you will rise, steer the outside ski and make the turn. Again, stop after making
the turn, return to the start point and repeat.
Learning Step/Activity 2 – Link wedge turns.
NOTE: This LSA is initially performed without ski poles. As students master the wedge turn without
poles, introduce ski poles.
a. Now that you have figured out how to turn, you are going to link those turns together. After going
through the first turn, simply continue moving across the fall line and initiate a turn in the opposite
direction and continue this process down the slope.
b. Drills:
(1) Slalom through ski poles.

(2) Keep hands pointed in the direction of travel as if they were headlights.
(3) Point skis, nose, knees and toes in the direction of travel.

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c. Common Errors and Remedies:
(1) Cannot turn. Apply pressure to the outside ski (squash the bug) and flatten the inside ski.
(2) Ski tips crossing. The skier is looking at the ski tips. Have the student focus a few feet in front
of the ski tips in the direction of travel.
(3) Inside ski runs down the fall line. Flatten the inside ski and increase the edge pressure on the
outside ski.
(4) Twisting upper body. Allow the inside hip to move in the direction of travel. Look in the direction
of travel and down slope. Actively steer skis with ankles.
(5) Skier is bent at waist and is poorly balanced. Get back into the proper athletic stance.
Emphasize the rise and fall with the knees and ankles, not by bending at the back and waist.
Learning Step/Activity 3 – Demonstrate the side slip.
NOTE: Progression to develop a Christy (skid) from a wedge turn requires introduction of a side
slipping or skidding at this time. Some students may have accidentally performed a basic Christy
during wedge turn practice. When this happens, let it happen. The student is naturally progressing
into the wedge Christy.
Begin by standing on a slope with skis across the fall line and poles spread wide. Now roll the knees
towards the fall line to release the edges and begin to side slip. Practice both the left and right side
slip. As you shift the weight from the balls of the feet to the heels, the direction of side slip will change.
If the balance is centered you will slide down the fall line. If it is on the balls of the feet, you will side
slip down and slightly forward. If the balance is on the heels you will slip down and slightly backward.
Try it while facing across slope. Then rotate the upper body and arms until they are oriented down the
fall line and try the same exercise.
Learning Step/Activity 4 – Ride the lift.
a. There are some things to remember when training at a ski area. The lower skier has the right of
way - always. Look uphill before exiting a cutoff trail and merging onto a main trail. Always ski in
control. If you are out of control, execute a controlled fall.
b. Get into position as directed by lift operator. Remove ski pole leashes and hold ski poles in the
outside hand. If you are on the left hold your poles in your left hand; if you are on the right, hold the
poles in your right hand.
c. An instructor or lift operator will place the T-bar behind your buttocks. The T-bar should ride just
below your buttocks. Continue standing and let the T-bar pull you up the hill. DO NOT SIT DOWN ON
THE T-BAR. Use your free hand to hold the center of the T-bar for balance. If you fall, roll to the
outside and get away from the main travel path of the lift. Your instructor will let you know (BEFORE
starting) where to meet if you fall off the lift.
NOTE: Ensure that students can handle the terrain serviced by the lift before going up. Check trail
maps or with the lift operator.
NOTE: Explain the loading and unloading procedures appropriate to the lift you are using. Explain
emergency procedures. Then review slope etiquette.
NOTE: Now that all of the bases are covered, let the lift operator know that you have students loading
that have never used the lift before. They can slow the lift down and ensure that students get on the lift
safely.
NOTE: The instructor for the squad should get on last. This will allow him to ensure all students load
safely. It may be a good idea to work in buddy squads. One squad leader can move on the lift in front of
the group while the other loads the students and ensures they all get on the lift safely.

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Enabling Learning Objective E:
Ski Lesson 5: Basic Nordic Downhill (continued)
ACTION Demonstrate wedge christy, stem christy and basic telemark turns to
control speed on moderate snow covered hills (skis match after the fall
line)
STANDARD Soldier demonstrated the wedge christy, stem christy and basic
telemark ensuring that skis matched after the fall line.
Learning Step/Activity 1 – Demonstrate the wedge christy (matching skis after the fall line).
NOTE: The wedge christy may be performed with or without poles. If the skier is too dependent upon
the poles for balance, take the poles away.
a. By now, you know how to make turns and get down a moderate slope. You also have practiced the
side-slipping technique. There are two different ways to start this drill. One starts by traversing a slope
and turning into the hill. The other starts with wedge turns down the slope and transitions into the
wedge Christy from there.
b. Method 1: Begin by traversing across the slope in a parallel stance. Actively steer the skis uphill to
stop. Skis should be parallel with the uphill ski slightly more advanced. As you traverse across the hill
the skis should skid (this is also known as Christy). This method gets you a feel for what the end of the
wedge and beginning of the next turn should feel like. After you come to a stop, kick turn and try this
drill in the opposite direction.
Now begin the drill by traversing across the slope in a wedge. Once you reach the fall line match skis
(bring skis to a parallel position, uphill ski slightly advanced), and actively steer them uphill as you did
earlier.
You should focus on rising up to steer and initiate the turn and matching and sinking into the skid
(Christy) to control the turn.
NOTE: Have students practice until they feel proficient.
NOTE: As the students progress, have them start the turn more and more in the fall line. Students
should progress to moving right down the fall line in the wedge, moving from wedge to parallel to turn
with Christy. As students become proficient with both turns begin linking wedge Christies; make sure
that students are matching skis AFTER the fall line. Turns should be large and “C” shaped at this
point.
NOTE: The second method is appropriate for those who have skied before and are frustrated by the
slower pace of the first method. Keep in mind that you should still begin this activity on a gentle slope.
c. Method 2: Begin by making some short radius wedge turns in the fall line. Be sure that the ski tips
are not too close together. You will need to work on the shape of your wedge turn, focusing on making
round turns instead of shallower S-shaped turns. You are also going to need a bit more speed (this is
accomplished by a smaller sized wedge or less of a V shape).
Steer the outside foot, knee and ski into the new turn. The speed is necessary because the round
turns slow you down (round turns are great for controlling your speed on steeper slopes).
You should be using your edges more. This helps you control your speed and helps you to shape the
round turn. Once this is comfortable, think of your inside ski. Now lighten (DON’T LIFT) the inside ski
as you move across the fall line. It should slide along side your outside ski and you skid (Christy), skis

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parallel until you go back into the wedge and start the process all over again. Another way to think of
this is to transfer your weight to your outside ski while lightening the inside ski.
NOTE: This whole activity is a drill. It can be done from top of slope to bottom. One common error is
leaning into the slope. Direct the student to keep the weight centered over skis. Using the hands as
headlights will also help. Another common error is to twist the upper body in an attempt to make the skis
turn. This is bad. Again have the student use hand as headlights. Another error is dragging the ski poles
or using them as out-riggers for balance. Lose the poles and only add them in after the student is
proficient without them.
Learning Step/Activity 2 – Demonstrate the stem christy (matching skis after the fall line).
NOTE: The stem Christy may be performed with or without poles.
a. Though you might think this is just another wedge turn, it is not….it is used when the going gets
fast, dicey and when your pack is heavy. In other words it is a technique used by advanced skiers the
world over. It produces a quick controlled turn initiation, thus avoiding the abundant speed present in
a parallel turn. The stem Christy also provides side to side stability.
b. To begin traverse across a slope. Stand up tall and stem your outside ski out as you would for the
wedge. Then step onto this ski, shifting your weight to the stemmed ski. Steer your ski into the fall
line. Lighten the inside ski. Sink with your body as you move through the fall line. Your skis will
match (or at least they should) as they did in the wedge Christy and you will finish the turn with the
same skid as the wedge christy.
If you are having a problem getting the inside ski to come parallel with the outside ski, try lightening
the inside ski AND pulling the heel into the downhill or outside ski. As you finish the turn, stand up,
stem the other ski out and step onto it for the next stem christy.
NOTE: Have students practice on one side then the other and then link the turns.
c. The main motion now that will be repeated in all other ski lessons is stand up, sink, stand up, sink
as you make each turn. This is fundamental to skiing no matter what method of turning you are using.
It allows you to weight and un-weight your skis.
d. There are three main points to keep in mind while performing wedge christies or stem christies:
(1) Use plenty of up and down movement; start tall and sink through the turn.
(2) Shift your weight onto the stemmed (or wedged) ski.
(3) Lighten the inside ski as your skis come through the fall line.
e. Drills:
(1) Garlands- Have the students link a series of turns for a short distance one after another trying to
stay in the same groove. Reinforces steering of the skis.
(2) Human slalom- Students line up in the instructional formation. The first student skis down a short
distance, turns and stops. The second skis down, turns around the first and stops, third student skis
down, turns around the first, then the second, then stops. The following students repeat using each other
as turning poles. Reinforces the need to steer the skis.
Learning Step/Activity 3 – Demonstrate the basic telemark (also known as telemark christy, matching
skis after the fall line).
NOTE: The telemark christy may be performed with or without poles.
a. Now we can finally free our minds because we will free our oppressed heels that have been kept
on the ski up until now (other than your 1,000 telemarks drill, when you have taken a fall and let your
skis flop around, or when your evil instructor made you cross country or move uphill).

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b. We need to review the telemark stance. On a flat spot, sink into the tele position, one foot forward
and one foot back. Your weight should be evenly distributed between both feet. Try a very low
stance, then try a taller stance. Find what is most comfortable for you. You should feel your weight on
all of your front foot and the ball of your rear foot.
Now try it while traversing across a shallow slope. Drop the uphill ski back and get into a comfortable
telemark position. You will turn up hill which will bring you to a stop. Kick turn and try it the other way.
If you have the diagonal stride down, you have the stance down. The stride motion is the same as the
telemark position with one exception. Your arms stay to the front in the telemark position, they are
stationary and relaxed in front of you (the same position you have kept while performing any of the
downhill techniques in past lessons).
c. Basic telemark from a half wedge. Begin with a straight run on a shallow slope. Point one ski
straight and point the other ski out as if it were in a wedge. Keep a minimum amount of weight on the
wedged ski; you should feel the inside edge brush lightly against the snow.
d. Now weight the wedged ski to initiate a turn. At the same time sink into a telemark stance. Think
of sliding the wedged (outside ski) ski forward and the inside ski backwards. Steer the outside ski
through the turn. You will turn uphill to a stop. Point your skis downhill again, move in a half wedge
and try the turn in the opposite direction.
e. Once you are comfortable with a single turn, practice executing the turn over and over with a drill
known as garlands. To execute the garland drill, traverse across a slope in the half wedge. As you
move across the fall line execute a turn. As you come to a stop, point the skis down the fall line again
and execute another half-wedge to telemark turn. You will be doing the same turn (left or right), until
you have reached the bottom of the hill or come to the edge of the ski run. If this is the case try it the
other way and again stay with the same turn until you reach the bottom or other side of the ski run.
f. Now you will try to link these turns. The key for now is to start in the half wedge and initiate the turn
and sink into the telemark position before the fall line. You should traverse across the fall line in the
telemark position, then move back to the half wedge position to initiate the next turn, and again sink
into the telemark before the fall line.

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Enabling Learning Objective F:
Ski Lesson 6: Intermediate Nordic Downhill and Advanced Cross Country
ACTION Demonstrate wedge christy and basic telemark turns to control speed
on moderate snow covered hills (with pole plant and skis match before
the fall line). Demonstrate basic skating techniques.
STANDARD Soldier demonstrated the wedge Christy and basic telemark turn (with
pole plant and matching skis before the fall line. Soldier demonstrated
basic skating techniques.
Learning Step/Activity 1 – Demonstrate the wedge christy (matching skis before the fall line).
a. Now that you are comfortable matching your skis after the fall line, you will transition to matching
your skis before the fall line. There really is not much to it other than practice. There are some things
to consider. Flexion and extension are what allow you to work your skis. You have seen this
throughout all of the ski drills you have done up to now. Rise and fall. Tall and small. Try turning
without the rise and fall. Now try it with this motion. “Flexion and extension allow you to control and
use the pressures that gravity and centrifugal force create against your edges. They are the key to
more carve and less skid (christy)” from Free Heel Skiing by Paul Parker. Flexion and extension keep
you from becoming stuck in a position as you move down the hill.”
b. At this point the poles will become more important. The idea is to keep the hand and poles in the
same forward position as before. But now you will begin to sting the snow with a pole plant to initiate
the new turn. This pole position and the pole plant helps keep the body oriented down the fall line.
This ‘quiet’ upper body becomes very important as you begin to transition to turns in the fall line.
Turning the upper body with the turn is a sure way to fall.
c. Work on short radius turns and on long sweeping turns. Turning before the fall line means you
maintain or increase your speed. Turning in or after the fall line means you will slow down. You now
know and have the techniques for moderating your speed as you move down a slope.
Learning Step/Activity 2 – Demonstrate the telemark christy (matching skis before the fall line).
Everything that applied for the wedge christy applies here as well; just try it from half wedge to telemark
christy and match the skis in the telemark position before the fall line. Pole plants, flexion and extension
and a quiet upper body are all just as important.
Learning Step/Activity 3 – Choose techniques for the terrain.
On a backcountry movement, conditions will change constantly. Different conditions call for different
techniques. You are starting to develop a repertoire for these different conditions. Getting good at a
single technique will not serve you well when the conditions are not suited to that technique. Wedge
turns, side-slipping, braking wedge, wedge christies, stem christies, telemark christies, kick turns may
all be used on a particular movement.
NOTE: Get the students into different conditions. Powder, breakable crust, wind slab, hard pack, and
bumps. As you get them into each situation, have them try different techniques. Let them get used to
the feeling of each, the body position that works well for them and the technique that allows them to
turn their skis best. Explain the fore-aft stability of a telemark position and how it is appropriate for
powder and breakable crust that is working to throw them forward or backward. Explain the
importance of the wedge position and the side to side stability that it affords. Side-slipping is skiing
and will work for steep icy conditions or narrow terrain. Work them in difficult situations; watch their
technique to ensure they do not develop bad habits. Some call this mileage and it is what will develop
better skiers. After a few hours of practice in different conditions, get them back to the groomed and
the students should notice a marked improvement in their skiing ability.

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Learning Step/Activity 4 – Demonstrate basic skating techniques.
a. On flat terrain, or to gain speed on a gradual downhill, or to move up a very gradual flat uphill
section, the skating technique can be the best method.
b. Start on a very gradual downhill section. Start moving in the herringbone. As you step from one
ski to the other give a little push to glide on the new ski. You should be able to use the same duck-
footed position but push a little harder from one ski to another and let each ski glide before the next
push. As you push off one ski, try to put the gliding ski down on its outside edge. Transfer all your
weight to the gliding ski. As you gain some confidence move to a flat section of trail. Here you actually
can get onto the outside edge of the gliding ski. The weight shifts from the pushing ski to the outside
edge of the gliding ski. You then roll this ski over to the inside edge for the next push. Repeat this
process and you are skating.
c. You can use your poles to help skate. Push off with your poles at the same time you push off with a
foot. This is known as V2. In actual cross-country skate skiing there is a slightly different motion, but that
is not important here as you do not have the long poles used for this technique.

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Enabling Learning Objective G:
Ski Lesson 7: Advanced Nordic Downhill
ACTION Demonstrate open stance parallel and open stance telemark turns on
moderate to steep (between 30 and 35º) snow covered terrain
STANDARD Soldier demonstrated open stance parallel and open stance telemark
turns.
Learning Step/Activity 1 – Demonstrate open stance parallel turns.
NOTE: Most students begin to perform the open stance parallel as they practice the wedge christy.
This is the natural progression and when you see it encourage it.
a. There are two important areas that you need to focus on as we advance in skiing technique. The
knees and the ankles. Try for a moment to ski with the knees bent but the ankles straight. You will
immediately notice that you are off balance. You bend forward at the waist to compensate for this lack
of balance and are then thrown backward as you over-compensate. Your knees act as shock
absorbers, but without flexed ankles, bent knees do nothing for you.
To start, make some medium radius, skidded parallel turns. Point the skis down the fall line and gain
some momentum in the athletic stance. Extend your legs by extending your ankles and begin the turn
(the tall position). You are going to get the most out of your weight on the downhill run. Steer the skis
into the turn. The main difference is that you are not in a wedge position at any point in the ski. If it
sneaks in to control your speed that is fine, but we need to move away from it.
Pole plants down the fall line initiate the next turn. The pole plants help with timing. They should not
be used as a staff to lean on and provide balance.
NOTE: If students are having a hard time with poles, practice without the poles until they have the
turns down.
b. At this point most of your turns will feel skidded and choppy. You have all seen the skiers that look
smooth, not matter what the conditions. To get you there we will try some edge control. Traverse
across a slope and get a bit of speed. Extend the ankles and tip the uphill ski onto the uphill edge. At
the same time transfer your weight to this uphill ski. With this accomplished roll the uphill ski onto the
downhill edge. This will initiate a turn and pull you into the fall line as you smoothly change edges and
steer into the fall line. Sink through the turn. With the turn complete try the same drill on the other
side. This drill should help you to make smooth edge changes and move you toward carving your
turns as opposed to skidding your turns.
c. Here are some tips to producing a smoother parallel turn. Do these things and you will be as
smooth as any alpine skier.
d. Focus on the inside ski. Most parallel drills focus on the outside ski. Because the outside ski is
weighted more than the inside ski, people tend to ignore it. But if you put some focus on it and play
with pressure and edging of the inside ski you will transform your turns into smooth, carved turns.
e. Focus on the inside knee. Your inside ski must be steered just as you do with the outside ski. Too
much focus on the outside ski can lead to crossed ski tips as the inside ski gets away from you. To
remedy this, point your inside knee in the direction of the turn. Moving into the turn with this pointy
knee will get the inside ski tip moving in the right direction. As the terrain gets stepper, leading with
the inside knee will help make your turns quick and get your body aligned for the turn. It will also get
the inside ski out of the way early and allow the outside ski to do the right thing without crossing over
your inside ski.

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f. Edge your inside ski. Skis that are edged equally are more likely to stay parallel. This is especially
true in loose snow, where your skis will want to move in different directions. On hard pack snow,
failure to edge skis equally will result in crossed skis. Try to tip both skis over onto their edges at the
same time. Make a series of turns and consciously focus on edging the inside. In powder conditions,
edging means tipping the ski onto its edge rather than trying to have it bite into the snow.
g. Slide the inside ski forward. Sliding this inside foot forward as you finish your turn allows you to
get a better edge with both skis. It allows your body to remain facing down the fall line. As your skis
come out of the fall line, let that inside ski slide forward before you shift your weight.
h. Weight the inside ski. On hard pack the downhill ski gets most of the weight. But in powder the
weight is more evenly distributed between the skis. Try weighting the inside ski on the whole little toe
side. Having the ability to do this will allow you to change your weight distribution to match the
conditions you are skiing in.
Learning Step/Activity 2 – Demonstrate open stance telemark turns.
NOTE: Most students begin to perform the open stance telemark as they practice the telemark christy.
This is the natural progression and when you see it encourage it.
a. Now we are getting to the true telemark turns. While practicing the telemark motion you probably
felt yourself transitioning from sequential steppy turns to more fluid telemark movement. The main
difference between the telemark christy and the open stance telemark is that the turn initiation begins
with the skis in a parallel position rather than from a wedge position. The turn becomes carved
instead of skidded.
b. Here are some additional tips to focus on as you transition to the open stance telemark. These
tips are taken directly from the free heel skiing guide:
c. Tuck your back leg under you. Think of bringing your rear knee cap into the bend on the front
knee. The back leg is the often neglected leg in the telemark turn. Many students new to the telemark
turn make the common error of letting their back leg flop about behind them with little weight placed
upon the ski. But because you should have your weight distributed equally between the two legs it is
just as important as the front leg. Your rear heel should be raised off the rear ski and directly
underneath your buttocks.
d. Think of knees as headlights. Point your front knee or headlight beam towards your new
destination. Once you have this concept down, focus on the back knee and try to point its beam into
the new turn.
e. Big toe, little toe. When you edge your skis into a turn, you should feel the pressure under the big
toe side of the front ski and the little toe side of the rear ski. This will edge your skis properly. Note
that with this tip, it is not just the toe of the foot but the whole side of that foot that has pressure on it.
But thinking big toe, little toe should stick in your mind. This concept will also help prevent you from tip
toeing on the rear ski. Your entire rear forefoot should remain on the ski.
f. Dropping your rear heel. This tip puts a number of things together. You have learned to put half
your weight on the rear ski. You have learned to use the big toe, little toe concept to get the skis to
edge properly and to give you more control of the turn. Now try to relax and bend your rear ankle
even more so that the heel drops closer to the ski. Stay on edge but try to get as much of the rear foot
on the ski as possible. This tip gives even more control over that rear ski. Your hips will naturally tuck
underneath your body to relieve the tension in your calf and Achilles tendon created by this dramatic
flexion in the ankle.
g. Do more with the hips. A good telemark skier has the same ‘quiet upper body’ that a parallel skier
has; that is the upper body moves and faces down the fall line. A telemark skier’s hips rotate with the
turn rather than face down the hill as with a parallel skier. With the upper body pointed down hill, you
essentially have a spring and when the edges are released for the next turn, the abdomen, back
muscles and hips rotate the skis around into the new turn. You should actually feel the abdomen

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muscles working for you. You will feel the new front hip punching around and into the new turn.
Concentrating on this front hip helps you to anticipate the next turn.
h. Skiing from the waist up. You have learned to focus out in front of you, rather than on your ski tips.
You have learned to keep your hands (poles) out in front of you, facing down the fall line. You have
learned to keep your torso facing down the fall line. Pole plants become more important to help with
timing. Think tap and turn. Tap the slope in front of you and turn around the pole. This is true of
parallel and telemark turns.
Glossary of Ski Terms
Angulation- moving in a diagonal or lateral plane in a flexing or extending manner.

The bending movements occurring in the feet, knees, waist, and spine, which are used
to adjust/ control the angle of the ski (edge) on the snow surface.
Anticipation- movement in preparation for weight transfer (shift) from one ski to the
next or in preparation for turning, during which the upper and lower body are brought
into a twisted relationship.
Balance- the action of maintaining equilibrium. "Static Balance" is maintaining balance

while stationary, and "Dynamic Balance" is maintaining balance in motion.
Camber- the bow shape of the ski, which distributes the skier's weight over the entire
running surface of the ski.
Carving- turning the ski over the snow where the tail of the ski follows the path created
by the tips.
Center of Mass (CM)- the point of the body where the skier's weight is most centered.
Christy- a turn where both skis skid on corresponding edges at some point during the
turn.
Control Phase- the point in the turn where the skis are guided through the intended
arc.
Countered Stance- a stance where the legs and torso are twisted in opposite
directions (counter rotation). A slight counter is used at lower level maneuvers.
Counter increases at higher levels.
Diagonal Stride- most commonly used maneuver to negotiating flat terrain. Cross
country skiing.
Double Poling- maneuver where the ski poles are the only source of propulsion. Both
poles are used simultaneously, with a distinct forward lean.
Double Pole w/ Kick- similar to double poling, except that a single kick is used to aid
in propulsion.

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Edge Angle- the degree of tilt of the ski along its long axis in relation to the surface.
Degree of edge adjustment is primarily determined by how far the ski is away from the
hips (CM). Fine tuning adjustments are made at the ankles and knees.
Edge Change- adjusting the edge angle from one edge of the ski to the other.
Edge Control Movements- movement of the hips, knees and ankles to adjust the
edge angle to the maneuver being performed.
Extension- straitening of the leg muscles, resulting in a taller stance. Extension/

flexion movements are used to control pressure on skis.
Fall Line- imaginary line running down the slope in relation to the skier. The path a ball
would take if it rolled down the slope.
Flexion- shortening of the leg muscles, resulting in a shorter stance.
Flow- movement that is continuous and uninterrupted.
Garland- series of turns across the hill that do not result in direction changes across
the fall line.
Glide- forward motion of one or both skis over the snow.
Grip- traction gained by use of wax.
Guide- to direct motion by physical action.
Herringbone- a hill climbing maneuver where the skis are in a V. The herringbone is
executed using the inside edges of both skis.
Initiation Phase- the phase of the turn during which a change from edge to edge
allows the skis to be turned or a direction change to start.
Kick- applying force down or stepping on, the ski that sets the wax into the snow,
providing momentary traction.
Matching- steering the skis from a wedge or stemmed position to a parallel position.
Pivot- the point on the ski around which the ski rotates. This point can be adjusted
through shifts in pressure fore and aft on the ski.
Poling- using the ski pole for propulsion.
Pole Plant (touch)- use of the pole as a timing and terrain sensing device when skiing
downhill. A pole plant most often begins the initiation phase of a turn and corresponds
with edge change. This is done by touching the pole to the snow, not by sticking the
pole into the snow.

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Preparation Phase- the point in the turn, which the skier prepares for, the next turn;
also referred to as the finishing point.
Pressure Control Movements- actively adjusting the pressure between the ski and
snow usually performed by Flexion/ Extension.
Rotary Movements- rotation, or a tendency toward rotation, of either the body as a

whole or of one part of the body relative to another.
Sidestepping- uphill movement with skis perpendicular to the fall line. Lifting the uphill
ski directly uphill, then bringing the downhill ski up to match it accomplishes movement.
Sideslipping- lateral slipping of the skis straight down the fall line.
Skidding- skis move forward and sideways simultaneously, while pivoting occurs.
Sliding- gliding in the same direction the skis are pointed.
Slipping- releasing the ski edge (flattening) results in slipping. The skier is moving
in a direction other than where the skis are pointed.
Steering- turning the feet to guide the skis in the desired direction.
Traverse- the line that crosses a slope by crossing the fall line.
Wedge- a fundamental position for the skis to introduce speed control while skiing
downhill. The skis are steered into a V position where the tips are close to each other,
the tails are displaced further apart.
Weight Transfer- shift in body weight from one foot to the other

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SECTION IV. SUMMARY
Check on Learning.
1. What is side cut?

The difference in width between the tip, waist and tail of the ski.
2. What is a braking wedge?

A braking wedge is essentially a gliding wedge with the inside edges dug into the snow more to slow
and ultimately stop a skier.

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699-8018: Move safely in avalanche terrain
Motivator: (Slide 1) Avalanches surprise more people in the winter than any other hazard. Many of
these surprises end in casualties. In addition to casualties, the military significance of an avalanche
can be lost/damaged equipment or blocked mobility corridors that require the commitment of
resources to clear. Avalanches have had a significant effect on military operations in snow covered
terrain. The Salang pass in Afghanistan is a main link between Kabul and northern provinces. In
winter it is the only link with the north as other routes are closed by heavy snows. Located at an
altitude of over 11,000 feet, the Salang pass has been closed in winter as the result of avalanches,
creating significant logistical difficulties for ongoing military operations. On the Austria-Italian front in
World War I, over 60,000 soldiers were killed by avalanches.
Avalanche Hazards in
Mountainous Terrain
1 REV-010920

ACTION Move safely in avalanche terrain.
CONDITION Under field conditions in avalanche terrain, given beacons, probes, shovels,
inclinometer, military snowshoe, bindings, ski poles, survival rucksack (packed
IAW training schedule), vapor barrier boots, rucksack (with a minimum load of
sleeping bag, sleeping pad, extra pair of socks, extra pair of mitten inserts,
additional packing list items may be prescribed by unit), ECWCS, other issued
cold weather clothing items, ballistic helmet, LCE with 2 quarts of water, and
weapon
STANDARD Student evaluated avalanche potential in different areas. Student chose safe
routes in terrain with avalanche potential. Student utilized special equipment to
recover personnel and equipment from a mock avalanche scenario.
Safety Requirements: Instructors that teach and lead this lesson will have attended a Level 1 avalanche
course. These same instructors will evaluate the terrain for the practical exercise to ensure that
avalanche danger is low and take steps to mitigate any existing avalanche danger by a thorough terrain,
weather, and snow pack analysis.
Move safely in avalanche terrain

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Risk Assessment: Low for classroom training. For field training, risk level will be determined by the
squad instructor based upon the current conditions.
Evaluation: You will be tested on your knowledge of avalanche hazards during a one hour written
examination at the conclusion of the course (Refer to training schedule for date/time of exam). You must
score a 70% on the written exam. If you fail the written exam, you will be given a second exam after re-
training has been conducted. If you fail this second examination, you will be dismissed from the course.
In addition you will participate in two practical exercises. You are expected to evaluate the potential for
avalanche in a particular area using knowledge presented in classroom and field instruction. You are also
expected to use special equipment to locate personnel and equipment buried in a mock avalanche
accident.
Instructional Lead-In: (Slide 3) You may be expected to plan and or conduct a movement in terrain
with avalanche potential. Or you may decide to venture into the backcountry of Alaska on snow
machine, skis or snowshoes to hunt, trap or just enjoy one of the most beautiful places in the country.
But do you know the risks? Which route would you take to get through the saddle in this photo?
Avalanches can and have killed people in areas that you probably would never think twice about going
into. With the knowledge gained in this lesson and some common sense, you should be able to
mitigate the risk to reduce or eliminate the chances that you or your unit becomes caught in an
avalanche.

319
Learning step/ Activity 1- Define avalanches.
a. (Slide 4) An avalanche is a mass of snow sliding down a mountainside. Avalanches are also called
snow slides.
What is an avalanche?
Definition: An
avalanche is a
mass of snow
sliding down a
mountainside.
Avalanches are
also called
snow slides;
there is no
difference in
these terms.
Learning Step/Activity 2 – Describe the two type of avalanches.
a. (Slide 5) There are two main types of avalanches – loose snow or point release avalanches and slab
avalanches.
Types of Avalanches
1. Loose snow avalanche or point release

avalanche
2. Slab avalanche

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b. (Slide 6) The loose snow slide or point release usually occurs on steeper slopes from 35° and up.
Loose snow slides start small, at a point, and grow in width as descent occurs, picking up more snow as it
goes; typically this involves only the very top layer of fresh snowfall. These types of avalanches typically
do not carry much snow but can trigger slab avalanches. In late spring, however, these types of slides
can carry become very significant as they become wet snow slides carrying large amounts of heavy wet
snow that can be quite destructive. They can also be the trigger for a large slab to break.
Point Release Avalanche
ALTHOUGH USUALLY SMALL,THEY CAN TRIGGER A SLAB TO

RELEASE

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c. (Slide 7) Slab avalanches contain a more cohesive mass of snow. The formation of a slab can
occur at any depth in the snow pack. A typical winter snow pack could contain many separate slabs
varying from an inch to ten feet or more in thickness. Each new snowfall eventually forms a definable
layer in the snow pack. The bonding of these adjacent layers determines the overall strength of the
snow pack. Not all layers in a snow pack evolve into slabs. Many detailed events occur over time that
affects the bonding process of the snow crystals within the snowpack. The lack of a strong bond
between layers increases the probability of avalanche. In addition to the strength of the various layers,
other factors affect avalanche probability.
d. The crown is the “starting zone”. This is where the fracture occurred. The track is the path the slide
took. The run out is where the slide stopped.
Slab Avalanche
CROWN
TRACK
RUNOUT

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Learning Step/Activity 3 – Describe the effects of avalanches.
a. (Slide 8) One of the most obvious results of an avalanche is the burial of people. As this chart
shows, as burial depth increases, the probability of survival decreases. Being buried is not necessarily
the cause of death. Trauma from impact with objects and asphyxiation are the leading causes of
fatalities. Asphyxiation happens as a result of the victims warm exhalations melting a fine layer of snow
around the nose and mouth. This creates an ice mask which prohibits fresh air from reaching the
victim.

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b. (Slide 9) The probability of surviving a burial diminishes with each passing moment. The chance of
survival drops to half after 15 minutes. As you can see from this chart, companion rescue is most
effective. If you witness an avalanche that buries people, you are the best chance of getting those
persons out alive. If you go for the help of an organized rescue, the chances are that you are going to
get help for a body recovery.

324
c. (Slide 10) Many tons of debris moved down this slope. As a slide moves downhill, it may reach
speeds of 80 miles an hour given the right conditions. In addition to the snow blocks, the surrounding
terrain features also become hazards. The victim may impact trees and rocks as well as debris being
carried within the snow. When the snow comes to a halt it sets up very hard, almost like concrete. As
the snow moves downhill friction and heat are generated. This action causes the snow to become a
semi liquid. After stopping the cold temperature of the air and snow causes it to refreeze immediately.
Avalanche Debris

325
d. (Slide 11) Even though this slope had adequate anchors, the snow-pack above the tree-line slid
and the weight and force of the moving snow removed all vegetation from the slope.
Avalanche Debris
Learning Step/Activity 4 – Recognize the four elements that contribute to avalanches.
a. (Slide 12) There are four elements to consider – Terrain, Snow pack, Weather and People.
Without people there is no hazard. This is the famous data triangle created by Doug Fesler and Jill
Fredston two avalanche specialists who reside in Alaska.
Recognizing the Hazard

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Learning Step/Activity 5 – Evaluate how terrain relates to the avalanche hazard.
a. (Slide 13) The first thing we will consider is the terrain itself. Is it capable of producing a slide?
What angle slopes will slide? How do I determine what this slope angle is? What other terrain
characteristics contribute to slope instability? These are the first questions you need to ask.
b. When we look at terrain we look at the slope angle, slope shape, the terrain characteristics
and feature(s) you are dealing with, and anchors (trees, boulders, scree etc.). If you become
competent at evaluating terrain you can manage it to your advantage as you move over it and keep
yourself out of harms way in most cases.
Terrain
• Can it slide? Is it capable of

producing avalanches?
• How do I measure the Slope

Angle?
• Terrain characteristics

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c. (Slide 14) Slope Angle: Typically, as the slope angle increases, the probability of an avalanche
increases. Based on statistics, without an angle greater than 20°, the gravitational force on the snow
pack is typically not great enough to produce a slide. While avalanches usually occur on slope angles
between 20° and 60°, a majority of avalanches occur between 30° and 45° and a disproportionately
large number occur between 35° and 40°. The “sweet spot” seems to be 38 degrees. Although slope
angles above 55° predominately produce loose snow slides, slab avalanches can occur. Snow falling
on the steeper slopes tends to “sluff” off upon falling.
d. The reason we measure slope angle is to determine if the snow can move. A lot of terrain can be
eliminated as a hazard area just by measuring the angle. Bear in mind that just because the angle is
prime to move does not mean it will slide. There are other parts of the triangle to consider.
Slope Angle: Can it Slide?

DANGER ZONE 60º
60º
20-60 DEGREES
NATURALLY
SLUFF OFF
20º
20º
30-45º
MINIMUM DANGER

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e. (Slide 15) Inclinometers There are several methods used to measure slope angle. Some
compasses have an inclinometer built in, and there are several stand alone inclinometers
manufactured. These devices all cost money and this prohibits their mass issue. The issued Army
Protractor, GTA 5-2-12, 1981, can be modified to read slope angle easily.
(1) Hold the card so the text can be read.
(2) Punch a hole in the exact center of the device and thread a tiny string through and tie a securing
knot on the backside of the card.
(3) Extend the string far beyond the farthest corner of the card; add 2 - 3 inches and cut the string.
(4) Tie a weight, such as a small washer or nut, to the fresh cut end.
How do I measure the slope angle?

Site Along >
This Edge
>

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f. (Slide 16) Measuring Slope Angle:
(1) Hold the card vertically so the data is legible and rotate until the weighted string hangs on the
zero mark. The corners containing the 2400 and 4000 mil marks define the sighting edge of the device,
with the eye point being the 2400 mil corner. Hold the card vertically, aligning the sighting edge with a
slope and allowing the string to hang freely against the card. When the string is stable, pinch it on the
outside edge of and against the card between the thumb and a finger. Move the card from the sighting
position and read the indicated angle.
>
90 Degrees
<
0 Degrees
(2) (Slide 17) Dig into the snowpack deep enough to align the site edge with the slope. Orient the card
to the slope as in the photo and ensure the card faces are vertical as in the photo. As the string is
hanging steady, pinch the string and the outer edge of the card between the thumb and a finger. Turn
card so you can read the indicated angle. If slope angle varies, use the steepest angle for your
assessment.
Surface of >
Slope
>
Sight the Angle from

Eye
inside the Snowpack
Point
by Digging Deep
>
Enough for the
Protractor

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g. (Slide 18) Slope Shape:
(1) In broad general terms, a concave slope is safer than a convex slope. This generality is true on
smaller slopes as compression forces at the bottom of the concave slope help prevent the snow from
sliding. The reason is that a concave slope is under compression, meaning it is being pushed together.
On larger slopes this advantage disappears.
(2) The majority of avalanche accidents occur on convex slopes. The convex slope is under tension,
meaning it is being pulled apart. This is quite evident on “rollers” or small hills. The military crest is the
most likely point of fracture.
Slope Shape
MORE STRESS
CONCAVE
SAFER
CONVEX

331
h. (Slide 19) Anchors will hold snow under most conditions. Grass and smooth rock will not hold snow
for very long. Talus, and downed trees will hold the very bottom layers until the snow depth covers the top
of the rocks or trees. Standing trees will hold surrounding snow, but a slide can still occur especially if the
trees are widely spaced.
Anchors
• Grassy slopes or smooth rock make for an
unstable slope
• Jumbled rock, deadfall will anchor bottom layers
• Trees will anchor surrounding snow, but

•beware of snow above tree line coming down
i. (Slide 20) Terrain traps are areas that offer no escape should an avalanche occur; snow is
naturally funneled into these areas. Gullies, couloirs, creek beds and canyons are places that people
tend to go because the traveling is easier but an avalanche from above can fill these areas. A cliff
below a line of travel also presents the problem of going over the edge if swept away.
Terrain Traps
Gullies,couloirs,creek beds,canyons
CLIFF
CREEK BED

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j. (Slide 21) The avalanche above this canyon filled in the low ground. Be aware of the hazard above.
Terrain Traps

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Learning Step/Activity 6 – Evaluate how the snow pack relates to the avalanche hazard.
a. (Slide 22) Once we have determined that the terrain can produce an avalanche (i.e. the slope
angle is sufficient, there are few if any anchors, the slope is convex or too large to matter, etc.), we
must look at the snow pack to determine if it is stable or unstable. An evaluation of snow pack can
become very scientific and for avalanche forecasters it does. For us a basic knowledge of the snow
pack ingredients required for a slide to occur are necessary. But before we look at these ingredients
lets look at why a slab slides.
b. The failure of the elastic energy in a slab of snow is the basis of an avalanche. Elastic strength is
defined as the strength within a slab cross section. An example of elastic strength is the strength
necessary to tear a pan cake apart with two hands. With enough force, the slab will separate from
itself, with one side remaining on the slope while the other slides downward. In the example with the
pancake, the outside force was the strength of the hands. In the snow pack, the outside force could be
a skier, other travelers, cornice breaks, or other natural occurrences putting stress on the snow pack.
In simple terms, the proverbial “straw that broke the camels back” is all that’s needed to start an
avalanche. An outside force is anything that comes in contact with the snow pack. An avalanche could
be triggered from the valley floor away from the slope. The slab structure will sometimes encompass
all of a valley floor and a surrounding slope.
c. There are three ingredients that combine to form an unstable snow pack and the potential for a
slab avalanche. Of course they must be in a particular configuration and this slide depicts an unstable
snow pack that could slide. The ingredients are:
(1) Slab: One or more layers of generally cohesive strongly bonded snow.
(2) Weak Layer: This is a layer of poorly bonded snow. It will often be loose and granular and it is
often called sugar snow, because it has the same consistency of loose, dry sugar.
(3) Bed Surface: This is another layer of consolidated snow, ice or the surface of the ground.
d. There are many layering combinations; the three layers mentioned are only one possibility. These
various combinations are dependent upon a number of weather factors which create layers within the
snow pack. There are some simple tests to determine snow pack stability that we will discuss and
practice later.
Snowpack: Ingredients for an

Avalanche

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Learning Step/Activity 7 – Evaluate how weather relates to the avalanche hazard.
a. (Slide 23) The weather creates the conditions that can lead to a stable or unstable snow pack. Wind
action, precipitation, slope aspect and temperature are some of the important factors that need to be
considered. Avalanche forecasters record weather data to help determine the stability of the snow pack.
Again, this can become very scientific, but for out purposes some simple observations can help us
determine how weather has effected and is effecting stability and ultimately where safe and unsafe routes
exist.
Weather
• Wind Action
• Precipitation
• Slope Aspect
• Temperature

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b. (Slide 24) Wind will transport snow from one area to another. This action can more than double the
snow on the lee side of a given slope. When this snow is deposited it forms a hard slab of compacted
snow. Because there is so much more snow, the weight alone can trigger a very destructive slab
avalanche. Snow can be top loaded, meaning it comes over the top of a feature, or side loaded meaning
it comes around. Either way the result is the same. If travel is necessary, the windward side will often offer
the safest route.
Wind Loading
Wind moves
snow LEEWARD WINDWARD
from one
area to
another
forming
a wind
slab
c. (Slide 25) The bare area is the windward side. The lee side was top loaded.
Wind Loading
WIND
LOADING
WIND SCOURING

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d. (Slide 26) Evidence of side loading. This picture also shows how much snow collects in the couloirs in
the background.
Side Loading

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e. (Slide 27) A cornice is formed by wind action – wind moves snow and a “bridge” builds up that gets
bigger with time. These may reach out away from the slope 20-30 feet. In some areas with turbulent
winds they may be doubled on both sides of the ridge. On glaciated peaks there may be a crevasse
present along the long axis of the ridge. The safe area of travel is well down hill on the windward side.
A cornice can break off and start an avalanche.
Cornice
f. (Slide 28) The whole top of this peak is corniced, extending approximately 15 feet from the ridge. A
person would not know they are standing over the void until they were right on top of it. Stay well back
from the leeward edge of any ridge or peak.
Cornice

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g. (Slide 29) A closer view of the cornice extending 15 feet from the ridge.
Cornice
h. (Slide 30) Precipitation: Recent heavy snow or rain is a contributing factor to avalanche danger.
Both forms of precipitation add weight to the snowpack stressing the elastic strength.
i. Snow falling at a rate of one inch or more per hour is cause for immediate concern. Most natural
releases will occur within 24 to 48 hours following a storm.
Precipitation
• Snow Fall
• Slush (Rain
Caused)

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j. (Slide 31) The aspect of a slope, or the direction it faces, greatly affects the occurrence of avalanches.
North-facing slopes are usually more prone to avalanche in mid-winter while south-facing slopes are more
dangerous in spring and on sunny days. As the sun moves to shine on a particular slope during the day,
that slope usually becomes more avalanche prone.
Slope Aspect
• North facing slopes are
avalanche prone in mid-winter
• South facing slopes are more

dangerous in spring and on
sunny days

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k. (Slide 32) In a perfect world snow forms a six sided crystal called a stellar crystal. This is the same
shape as what would be seen on a Christmas card. As these crystals fall through the atmosphere, the
sharp edges lock onto each other. Upon reaching the ground, they continue to lock into each other
forming a layer. Snow that forms as other crystals such as dendrites, plates and columns will bond
differently or not at all. Graupel is similar to little beads that will generally not bond together at all.
l. As time passes the crystalline structure deteriorates and the snow will look like barbells joined
together. This is the perfect snow pack.
m. Changes in temperature affect the bonding process of the crystal structure of the snowpack. This
bonding is the cause of slab formation. Extreme drops in temperature will make the snowpack more brittle
and likely to fracture. As temperatures in the snowpack increase, the bonding time of recent snow to old
snow is decreased. In other words, a warmer temperature increases the stability of the snowpack.
However, when temperatures rise above freezing, rain and meltwater can rapidly destabilize an otherwise
safe snowpack. Increases in temperature can cause wet snow slides. If a cold snap occurs after a warm
spell, the snowpack can freeze solid and bond very well. But this may form a layer of ice, resulting in a
smooth surface layer that may become a bed surface for a new slab later on.
n. As temperatures increase, the bonding of the crystals happens more rapidly. This process is called
the freeze/thaw cycle. Temperature usually drops after a storm. Snow covered terrain is usually most
unsafe immediately after a storm due to the lower temperatures delaying the freeze/thaw process and the
added weight (stress) on the old snow pack.
Temperature
• Wet slab avalanches from
excess warmth or rain
• Determines bonding of the snow

through the freeze thaw cycle

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Learning Step/Activity 8 - Evaluate how people relate to the avalanche hazard.
a. (Slide 33) If the terrain, weather and snow pack conditions add up to unsafe conditions, adding
people will often trigger an avalanche. Recreationally, people often have limited time to play and will
often ignore blatant avalanche warning signs. Ignorance of the hazard can also contribute to accidents.
Slabs as shallow as a few inches thick have slid and killed people. For the military, focus on the
mission can cause leaders to ignore the warning signs. This was evident on a large scale in World
War I on the Austro-Italian front where over 60,000 soldiers focused on the mission lost their lives to
avalanches (most of them triggered by themselves). Overconfidence can also play a role. If you have
traveled to an area repeatedly with no consequences you may be conditioned to expect that the area is
always safe. You may also feel that you and your travel partners have the necessary training and
equipment so that even if there is an avalanche, you can help yourselves. Look at the whole picture of
what is happening and make an informed decision about whether or not to travel.
People: Human Factors

• Ignorance of the hazard
•Mission focused
• Traveled through an area many times

and it was always safe before
• Brain not engaged
• Don’t know don’t go; you control this

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Learning Step/Activity 9 – Describe some of the common avalanche triggers.
a. (Slide 34) When terrain, weather and snow pack all combine to create prime conditions, all we
need is a trigger to set off an avalanche. When more than one inch of snow falls per hour, a rapid load
is being placed on the existing snow. This is also the case during a wind event. A cornice break can
impact the snow with significant force and people moving on snow can also cause it to move. In all of
these instances natural slides can be triggered. Of course personnel and vehicles moving on unstable
slopes can also tip the balance and trigger a slide.
Overloading
• Additional Snow Fall (more than 1
inch an hour)
• Windloading
• Cornice Breaks
• Personnel/Vehicles
b. (Slide 35) Demolitions can be used to set off unstable snow. The use of decommissioned artillery
pieces, air cannons and demolitions at ski resorts and roads is widely practiced. It must be noted
though, the charge must hit the “sweet spot”, and some instability must be present in order to be
effective. Use of artillery to clear a slope (Selkirk Range, Canadian Army) is pictured.
Demolitions
• Trigger avalanche(s) prior to
moving
• Must be detonated in the

correct position
• Could give away position

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Learning Step/Activity 10 - Describe general indicators of avalanche prone terrain.
a. (Slide 36) Evidence of previous avalanches- debris piles at the base of a slope, flagged trees,
trees all pointed away from the slope
b. Steep slopes between 30º and 45º
c. Heavy snowfall- added weight to the existing snowpack
d. Visible fracture lines in the snow- even on low angle terrain indicates possible weaknesses on
surrounding steeper terrain
e. Audible settling of the snowpack- a “whumpf” sound comes from collapse of an underlying weaker
layer of snow or hoar frost
f. Severe changes in temperature- increasing temperature increases weight of surface layer(s)
through melting
g. Lee slopes- usually are topped by a cornice; as the cornice is built the excess snow is deposited
downslope by the same wind and adds weight to the existing snowpack
h. Snow plumes and high winds- build cornices and leeward deposits
i. Slushy "spring" snow- very heavy and apt to slide at high angles
j. An outside force to give the force to break the stability
General Indicators of Avalanche

Prone Terrain
• Evidence of previous slides
• Steep slopes between 30-45 degrees
• Recent heavy snowfall adding to the weight of
snowpack
• Visible fracture lines in the snow
• Audible settling of the snowpack
• Severe temperature changes
• Lee slopes
• Snow plumes and high winds
• Slushy spring snow
• Outside force to break the stability

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k. (Slide 37) Flagging- vegetation shows signs of destruction from up slope; clear swaths surrounded
by vegetation are previous avalanche paths; trees bent, broken trees, trees with branches missing up
to a certain height are indicators that an area is prone to slides. Closer inspection reveals the size of
the limbs and the force of the avalanche.
Tree Flagging
Learning Step/Activity 11 – Select the safest routes for travel in avalanche prone terrain.
a. (Slide 38) The most important part of military mountaineering is the ability to evaluate mountain
hazards and select a way to avoid them or mitigate the risk if it is impossible to avoid the hazard. While
traveling in snow covered, and potentially avalanche prone terrain there are a number of considerations
for proper route selection. The answer to the question on the slide is almost always YES! Some of the
considerations have already been discussed such as traveling on windward slopes as opposed to
leeward slopes and avoiding terrain traps suck as creek beds and travel below cliffs.
Route Selection: Is there a SAFER

route?

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b. (Slide 39) Travel in Valleys. Sometimes travel below snow covered slopes is unavoidable. A
consideration of the past weather and current snow pack conditions combined with common sense route
selection (as far away from the potential slide path as possible) can make for safe travel. Consider the
run-out area of any potential slides.
Route Selection: Travel in Valleys

• Traffic in the valley floor can trigger slides
from above.
• How will you know the risks?
• Consider your Run-out Angle for safe

travel in valleys
c. (Slide 40) Run-out (Alpha) Angle-The measured angle from your location to the potential avalanche
start point. This is based on elevation difference and potential runout distance. 19º or less is considered
safe. Once a safe alpha angle has been achieved, insure you did not back into another hazardous area.
Consider all surrounding slopes. The higher the start point upslope, the further you need to be from the
base of the slope for safety. Slides on concave slopes tend to run further than slides on convex slopes.
Run-Out Angle
The MEASURED angle from
you to the potential avalanche
start point.
19 Degrees is
considered safe

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Learning Step/Activity 12 – Describe simple tests to evaluate the snow pack.
a. (Slide 41) Snow Pack Stability Tests - There are many tests that you can perform on the snowpack to
determine stability. Many of the tests will tell you nothing unless you study snowpack science and study
snowpack frequently enough to remain proficient and use the knowledge. For the average snow terrain
traveler, there are a few tests that produce practical results and are simple to perform. These tests will be
demonstrated in the field during the course of instruction.
Hazard Evaluation:
Snow Pack Analysis
• Ski-pole
• Snow-pit
• Shovel Shear
• Rutschblock Test
• Banzai Test

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Learning Step/Activity 13 – Assess the hazard level of a potential avalanche area.
a. (Slide 42) This is a hazard evaluation checklist designed by the Alaska Mountain Safety Center (Doug
Fesler and Jill Fredston). It lists all four elements required for an avalanche and asks questions designed
to determine the hazard level associated with the current conditions and circumstances. It uses a Green
(Safest), Yellow (Caution Advised) and Red (No Go) system to make the evaluation. We will take this out
to the field and use this checklist to conduct a thorough risk assessment. The five step risk management
process is another way to evaluate the hazard.

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Learning Step/Activity 14 – List the equipment required for back country travel in avalanche terrain.
a. (Slide 43) Avalanche Probe- at least eight feet long, ten is better; typical construction is many shorter
sections connected by a cable, similar to tent poles.
b. Shovel- heavy duty, wide blade, short handle, packable. Plastic shovels are dubious.
c. Transceiver- quickest device used to locate a victim; they are quite expensive, about $200.00 each.
THEY WILL NOT KEEP YOU FROM GETTING IN TROUBLE AND SHOULD NOT BE A REASON TO
TAKE CHANCES! Must have at least two- one transmitting from the victim and the other switched to
receive and worn by the searcher. A significant amount of time must be dedicated to gain proficiency.
d. Slope angle device.
Necessary Equipment in
Avalanche Country
• Avalanche Probe
• Shovel
• Transceiver
• Slope angle measuring
device

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Learning Step/Activity 15 – Cross a questionable slope.
a. (Slide 44) If a questionable slope must be crossed the following actions must take place:
(1) Route must be the shortest possible. If possible use “islands of safety” such as trees, exposed
rocks etc.
(2) A watch is posted to note the person’s direction of travel and note where they go should a slide
occur.
(3) Disconnect ski pole and ski binding leashes so they can be discarded rapidly. A heavy rucksack
can drag you under, a light puffy rucksack can aid in flotation.
(4) Cross one at a time.
Crossing a Questionable Slope

• Loosen equipment
• Remove pole straps from wrists
Disconnect safety leashes from
skis
• Loosen rucksack straps
• Cross one at a time with a watch
posted

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Learning Step/Activity 16 – React to an avalanche.
a. (Slide 45) Discard ski poles and skis if able. Also discard a heavy pack.
b. A swimming motion can help to maintain a surface position. Fight hard to maintain this surface
position.
c. Try to form an air space as soon as you stop.
If Caught in an Avalanche
• Attempt to release skis
• Remove heavy rucksack
• Use Swimming Motion
• Create an Air Space
• Try to find the surface

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d. (Slide 46) Watch the victim. Note where they went on the slide path and terrain traps that may hold
them.
e. After the area has been ascertained to be safe, begin looking for the victim.
f. Go to the last point seen and mark it.
g. Look downslope for surface clues, but do not remove them. Use them as you would the sights on a
rifle. They will usually point downhill to the area of burial.
h. Begin a beacon search if your group has them. Ensure EVERYBODY is in receive mode. Some of the
party can begin in the deposition zone, others in terrain traps. There is one person in charge and the
effort must be organized. Utilization of beacons will be covered in a practical exercise in the next block of
instruction.
i. If the party was not using beacons then probing will be necessary. Avalanche probes are preferred,
but ski poles with the baskets removed, long sticks, or any other long rigid object will work.
j. Don’ t go for help. You are the help.
If you witness others caught in an

avalanche
• Keep your eyes on the victims.
• Note terrain traps
• Look for surface clues
• Organize search
• Don’t go for help. YOU ARE THE HELP!
NOTE: At this point the instructor will review and summarize the computer based instruction. The
next Learning Steps/Activities will be performed in the field IAW the published training schedule
for the course in session.

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NOTE: The remainder of the Learning Steps/Activities are performed in a field environment.
Learning Step/Activity 17 – Conduct hasty snow stability tests and terrain evaluation during travel.
a. As you travel on the snow occasionally push your ski pole into the snow and “feel” the layer
construction with the basket as you pull the pole from the hole. Not scientific, but this test gives you clues
as to the strength of the snow pack.
b. If you are making switch backs while ascending a hill, you can jump on the uphill track where you
changed direction. You are looking to see if you can make the snow slide. Snow that slides easily is an
indicator of instability. This test will show the bonding of the top layers only. Of course this test must be
done on a slope with little or no consequence; that is you want to conduct the test where if you do create
a snow slide, it does not have the potential to bury you or others.
c. Find and ski little “rollers” or small hills along your route. These should be of the same aspect and
steepness of the larger hill you intend to climb. Again, this test should be performed in an area with little
to no consequence to you or others.
d. Begin to form an opinion about the terrain you are traveling over (is it red, yellow or green terrain).
Note the angle of the slopes you are moving on. Get your protractor out and do some measuring. Look at
the terrain above you as you travel. Think about the potential for avalanche coming from above. Think
about the run out angle if an avalanche were to occur above you (again use your protractor to determine
the run out angle). Watch out for terrain traps and think about the consequences of moving through a
particular area.
e. You should continue to do this as you travel over and over again. Results in one area can differ
dramatically after a few hundred meters or even a few feet. You are trying to develop an overall picture of
what is going on around you, not just a localized one.
Learning Step/Activity 18 – Dig a snow pit and evaluate the snow pack.
a. Snow pit test- This test gets your eyes and hands into the snow pack. Choose a safe slope with a
similar aspect, direction and angle (must be at least 30 degrees), as the suspect slope or the slope you
want to travel.
b. Carefully dig into the bank above you with a shovel or similar device. You should go down
approximately six feet or ground level in shallower snow. When finished you will have three walls of the
snow pack exposed. The walls should be straight and smooth. In this pit, you can further analyze the
strengths and weakness of the layers of snow, the bonding between old and new snow layers.
c. At this point you can see the different layers of snow. Touch them and see how hard or soft they are
and look for any hoar snow (also know as sugar snow or plates). After poking around in the walls, re-
smooth them. Take a protractor or credit card and cut from the top of the snow pack down the front wall.
As you cut you should notice the different layers of snow that have formed over time with different
weather events.
d. You are looking for the three ingredients in the right combination that could create a slab avalanche.
That would be a slab (well consolidated snow) on top of a weak layer (poorly bonded snow) on top of a
bed surface (e.g. smooth ground surface, an ice lens that formed early in the season). You can use this
information to begin to determine the stability of the snow pack. Along with some of the hasty steps you
performed earlier and some of the other stability tests we will demonstrate next you can give the snow
pack a red, yellow or green evaluation.

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Learning Step/Activity 19 – Conduct the shovel shear test.
Method
a. Start with a snow pit similar to the one you constructed earlier. Isolate a column of the snow on all
sides creating a column as shown in the figure below (column is 1 foot by 1 foot by depth of the pit). The
column should be of similar size to the blade of the shovel. Dig out the sides of the column without
pressing against the column with the shovel, (this affects the strength). To isolate the rear of the column,
use a rope, string or snow saw to saw from side to side to the base of the column.
b. If the column remained standing while cutting the rear, place the shovel in the cut behind the top of
the column. Pull on the shovel as close to the snow as possible. Don’t jerk or pry the shovel, pull straight
out. Note how much force it took to make the column fail.
(1) Very Easy - fails during cutting or insertion of the shovel. Snow conditions highly unstable. Natural
avalanche occurrences are to be expected. Any steep slope of the same orientation is suspect. If the
depth of snow above the sliding layer is approximately 6", look for an alternate route.
(2) Easy - fails with minimum pressure. Snow is unstable. Natural avalanche releases likely. Skier
releases highly likely. Keep off steep slopes.
(3) Moderate - fails with moderate pressure. The most difficult result to interpret. Snow on steeper
slopes is likely to fail with less effort. Take precautions if you decide to cross slopes.
(4) Hard - fails with firm, sustained pressure. Stability at this location.
(5) Collapse - Block settles when cut. Common in cold dry climates. Confirms a weak layer of depth
hoar. If you are uncertain of the strength of overlying snow layers, perform the Compression Test.
c. Note the bottom shape of the part that failed. If it and the surface it separated from are smooth, there
is significant instability (very easy, easy and moderate force). If it is very irregular (moderate and hard)
there is more stability.

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d. This test measures only the amount of shear the snow will tolerate and only in a small area. Several
pits will need to be dug in a wide area to gain a better picture of what is happening within the snow pack,
but this test does give another clue as to the stability of the snow pack.
Learning Step/Activity 20 – Conduct the compression test.
a. Start with a snow pit..
b. Isolate a column of snow about one foot by one foot as you did in LSA-18. Place the blade of the
shovel flat on top of the column. Strike it flat and easy with the palm of your hand. Start with 10 taps,
resting the palm of your hand on the shovel and articulating from the wrist. If the column does not fail
execute 10 additional taps by articulating from the elbow. If the column still has not failed, execute 10
more taps from your shoulder using the full weight of the arm. With this last step, allow your arm to fall
onto the shovel; do not accelerate the arm.
c. Evaluate the snow pack as follows:
(1) Column fails when cutting or on 1-10 taps. Red light for the snow pack or unstable snow.
(2) Column fails after 11-20 taps. Yellow light for snow pack. Caution should be used on prime slope
angles. This is a good day to manage the danger by managing (reducing) the angle of the slopes you
travel on.
(3) Column fails after 21-30 taps or not at all. Green light or stable snow pack.
c. This test measures only the amount of compression the snow will tolerate and only in a small area.
Several pits will need to be dug in a wide area to gain a better picture of what is happening within the
snow.

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Learning Step/Activity 21 – Conduct the rutschblock test.
a. The Rutschblock test uses your weight to determine the stability of the snow pack. It gives the best
representation of snow pack strength because you use your weight on the snow to determine snow pack
stability. The Rutschblock Test is the easiest to evaluate and understand and the most accurate for the
typical snow traveler. To conduct the test:
(1) Expose a vertical wall approximately the length of a pair of skis long, a ski pole wide and at least 6’
deep (or to ground level).
(2) Then cut the back with a snow saw (with an extender handle) or a ski. The back cut must be deep
enough to include any suspected weak layers. Angle the side cuts in towards the back, so the block will
slide easily if it shears. If there’s failure while digging, this area has significant instability.

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(3) One person moves on their skis or snowshoes above the block without disturbing the block. Note
at which step the failure occurs and give it a score of 1-7:
• Failure of the block by its own weight or by the person moving into position above. (Score of
1 or Red Light)
• One person on skis steps carefully on the block from above. (Score of 2 or Red Light)
• Skier weights skis by making a rapid knee bend. (Score of 3 or Red Light)
• Skier jumps. (Score of 4 or Yellow Light)
• Skier jumps a second time. (Score of 5 or Yellow Light)
• A person jumps on the block without skis. (Score 6 or Green Light)
• No failure observed. (Score 7 or Green Light)
b. Failure at load levels 1, 2 or 3 - stability is poor. Failure at level 5 - stability is fair. Failure at level 6 or
no failure - stability is good. DO NOT SKI OR MOVE ON A SLOPE IF IT FAILS AT LESS THAN 2
JUMPS.

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Learning Step/Activity 22 – Conduct the banzai test.
a. This test is simple and fun. Find a slope with the same properties as the one you will move on. It must
have no terrain traps below you and you must not be connected to any larger slopes that could slide.
b. At least four people link arms and jump onto the slope, landing on their behinds. If the slope moved
count on other places with the same properties to be suspect.
Learning Step/Activity 23 – Predict the likelihood of an avalanche using the hazard evaluation checklist.
a. Use the hazard evaluation checklist below to record the information you have been gathering and
give a Go or No Go evaluation of the current avalanche hazard.
Hazard Evaluation Checklist

Terrain – Is the slope capable of producing an avalanche?
Red Yellow Green
Steepness (Is it steep enough to slide? Is it prime time?)
Aspect (Leeward, shadowed, extremely sunny)
Configuration (anchoring and shape)
Subtotal
Snow pack- Could the snow slide?

Red Yellow Green
Slab configuration (slab? depth? Distribution?)
Bonding ability (weak layer, tender spots?)
Sensitivity to triggers (How much force? Shear tests? Clues?)
Subtotal
Weather – Is the weather contributing to the instability?

Red Yellow Green
Precipitation (Type, amount, intensity, weight)
Wind (Snow transport? Amount and rate of deposition?)
Temperature (Storm trends? Effects on snow pack?)
Subtotal
Human Factors – What are the alternatives and their

consequences?
Red Yellow Green
Attitude (Risks? Goals? Assumptions?)
Technical Skill level (Traveling? Evaluating avalanche hazard?)
Strength/Equipment (Strength? Prepared for the worst?)
Subtotal
Overall Go or No Go

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Learning Step/Activity 24 – Practice safe travel techniques.
a. Safe travel through avalanche terrain is an art. One of the most important things you can do in
avalanche terrain is to continually assess the hazard and make efforts to mitigate any risk that you find.
This is probably the most important action you can take to keep yourself and or your unit out of danger.
During movement, there are a number of ways to minimize your exposure to any dangers that may be
present. You may (and probably should) conduct a through risk assessment, like the one we just
conducted; the evaluation can then be used to make decisions about how you will move. Here are some
techniques (from Staying Alive in Avalanche Terrain) to try for the different conditions you may
encounter:
(1) Red Light conditions. You have observed any or all of the following:
• Recent avalanche activity
• Collapsing and cracking of the snow pack
• Most or all of your snow pit tests show unstable snow conditions
• Recent heavy loading of new and/or windblown snow
• Rain on new snow
• Rapid melting of new snow
• Sinking in past your knees while walking on wet snow
(2) During red light conditions you must:

• Manage your slope angles. Travel on terrain with slope angles of less than 30 degrees.
• Watch your run out angle.
• If you must travel on steeper terrain, do so in areas that are heavily wooded or wind scoured
only.
• Travel one at a time through suspect areas and be sure to keep watch as an individual
moves through the danger areas
• Be prepared to deal with the consequences of an avalanche.
(3) Yellow light conditions. You have observed any or all of the following:
• Localized recent avalanche activity
• Areas of collapsing or cracking
• Mixed results from snow pit tests
• More than two days since a heavy loading or rapid warming event
• Sinking in past your ankles when walking on wet snow
• Rain on old snow
• Rapid warming of old snow
(4) During yellow light conditions:

• This is where most avalanche accidents happen. You often get mixed results and may
convince yourself that it is safe to take greater risks.
• You should stay on gentle terrain (less than 30 degrees) unless you have extensive
experience.
• Travel one at a time through suspect areas and be sure to keep watch as an individual
moves through the danger areas.
• Watch the run out angles and again be prepared to deal with a slide.
(5) Green light conditions. You have observed any or all of the following:
• No recent avalanche activity
• No collapsing or cracking
• Snow pit tests show stable conditions
• More than several days without heavy loading or rapid warming
• Thick refrozen snow
• Not sinking in past ankles when walking
(6) During green light conditions:

• Most routes are safe
• Continue to practice safe travel techniques

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Learning Step/Activity 25 – Rescue avalanche victim(s) (initial steps).
a. Immediate action- Ascertain that the area is safe. Survivors at the avalanche site are organized into
the first rescue team and immediately start rescue operations. If any indication of the location of the
victim is found, random probing starts in that vicinity. The tip and edges of the deposition zone are also
likely areas to search. A human body is bulky and is apt to be thrown toward the surface or the sides.
b. General Procedures- Establish from witnesses where the victim was just prior to the avalanche, then
determine the point where the victim disappeared - the "last seen" point. Making use of this and any
other information, establish a probable victim trajectory line leading to high priority search areas. Make a
rapid but systematic check of the slide area and the deposition area and mark all clues. Look for skis,
poles, ice axes, packs, gloves, hats, goggles, boots, or any other article the person may have been
carrying, it might still be attached to the victim.
c. In many respects, a moving avalanche resembles a liquid. A human body, with a higher density than
the flowing snow, would be expected to sink deeper and deeper into the avalanche; however, several
factors influence this. Turbulence, influence of terrain, and the victim's own efforts to surface himself, all
interact to determine the final burial position. Study of a large number of case histories leads to the
following conclusions:
d. The majority of buried victims are carried to the place of greatest deposition, usually the toe of the
slide.
e. If two points of the victim's trajectory can be established, a high probability exists that the victim will be
near the downhill flow line passing through these two points.
f. Any terrain features which catch and hold avalanche debris are also apt to catch a victim.
g. If an avalanche follows a wandering gully, all debris deposit areas are likely burial spots. The
likelihood of a victim being buried in a particular bend is proportional to the amount of debris deposited
there.
h. Vegetation, rocks, and other obstacles act as snares. The victim tends to be retained above the
obstacle. An obstacle may simply delay the victim's motion, leading to final burial down flow from the
obstacle.
i. Maximum speed of the flowing snow occurs at the avalanche center. Friction reduces flow velocity
along the edges. The closer the victim's trajectory is to the center of the slide, the greater his burial
depth.
j. Efforts of the victim to extricate himself by vigorous motion and "swimming" definitely minimize burial
depth. Conversely, the limp body of an unconscious victim is likely to be buried deeply.
k. An occasional exception to the above is emphasized. The victim may not be buried but may have
been hurled away from the avalanche by wind blast. In the case of large and violent avalanches, a
search of the surrounding terrain is advisable. Victims have been located in tree tops outside the slide
area.

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Learning Step/Activity 26 – Rescue avalanche victim(s) using a probe line.
a. Organize initial searchers and probers. Everyone should have a shovel or other tool for digging or if
there are sufficient people, a shoveller(s) can be standing by to assist when needed. If the initial search
reveals items from the victim, make an initial probe search in that area. This probing should take only a
few seconds. If no other search method exists, make a coarse probe of all likely areas of burial, and
repeat it as long as a live rescue remains possible. Resort to the fine probe only when the possibility of a
live rescue is highly improbable, within the first thirty minutes. Unless otherwise indicated, start the
coarse probe at the deposition area.
b. Probing for Avalanche Victims- Probing offers the advantage of requiring very simple equipment that
can be operated by personnel without previous training. Although the probers do not need previous
training the search leader must be familiar with the technique to insure proper execution of the probe line.
c. For the probing operation to be effective, lines must be orderly and properly spaced. To insure
systematic and orderly probing, the number of personnel per line should be limited. Twenty per line is
satisfactory, while thirty is normally the upper limit. The number of probers in the line will be dictated by
not only the width of the area to be probed but the amount of people available. A string may be used to
keep the probe lines aligned, but will require added time to maintain.
d. The probe line maintains a steady advance upslope. Advancing uphill automatically helps set the
pace and permits easy probing to the full length of the probe. Probing does not come to a halt when a
possible contact is made. The probe is left in contact and the line continues. A shovel crew follows up on
the strike by digging down along the pole. Extra probes are carried by the shovel crew to replace those
left in contact. Such a plan of operation is especially important when more than one victim is buried.
Striking a body gives a distinct feel to the probe. This feel is easily recognizable in soft snow but is less
easy in hard compacted snow. A common problem is encountering debris within the snow that can be
mistaken for the victim. The only sure check is by digging.
e. Two distinct probing methods are recognized: Coarse Probe and Fine Probe. As evidenced by their
names, coarse probing implies a wider spacing of probe pole insertions with emphasis on speed. Fine
probing involves close-spaced probing with emphasis on thoroughness. Coarse probing is used during
initial phases of the search when live recovery is anticipated. Fine probing is the concluding measure
which almost guarantees finding the body. The coarse probe technique has a 70 percent chance of
locating the victim on a given pass, while the fine probe has essentially a 100 percent chance of locating
the body. The Coarse Probe functions as follows:
(1) Probers are spaced along a line 30 inches center to center, with feet about 15 inches apart. Think
of a squad line formation at close interval.
(2) A single probe pole insertion is made at the center of the straddle span.
(3) On signal of the probe line commander, the group advances 20 inches and repeats the single
probe.
(4) Three signals are used for the complete sequence-
"DOWN PROBE"
"UP PROBE"
"STEP FORWARD"
By adhering to these commands, the leader can keep closer control of the advancing line of probers. It is
important that the signals be adjusted to a rhythm which enforces the maximum reasonable pace.
Further, a string could be used along the probe line to keep the probers dressed, although this would
require the use of two people to control the string. Strict discipline and firm, clear commands are
essential for efficient probing. The probers themselves work silently.
f. The Fine Probe- The fine probe functions as follows:

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(1) Probers are spaced the same as for the coarse probe. Each man probes in front of his left foot,
then in the center of his straddled position, and finally in front of his right foot.
(2) On signal, the line advances 1 ft. and repeats the probing sequence. Each probe is made 10
inches from the adjacent one.
(3) The commands for the fine probe are:
"LEFT PROBE"
“UP PROBE"
“CENTER PROBE"
"UP PROBE"
"RIGHT PROBE"
"UP PROBE"
"STEP FORWARD"
g. Good discipline and coordinated probing is even more necessary than with the coarse probe.
Careless or irregular probing can negate the advantages of fine probing. Use of a string to align the
probers is especially important with the fine probe. The three insertions are made along the line
established by the string line which is then moved ahead 1 foot.

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Learning Step/Activity 27 – Rescue avalanche victim(s) using a beacon.
NOTE: There are many beacons available and each has features and options that must be familiar to the
user. You must be familiar with the particular beacon you are using, adhere to the manufacturers
instructions and practice with it frequently to maintain proficiency. This block of instruction will provide
instruction on the use of the F-1 Ortovox.
a. The same procedures for establishing the victims general location are followed.
b. Ensure everybody in the group turns their beacons to receive or off to eliminate the possibility of false
signals.
c. If the group is large enough, some members can begin searching in likely terrain traps while the bulk
searches in the deposition zone.
d. To search:
(1) Set the transceiver to the highest strength and begin moving.
(2) As you get closer to the buried beacon the signal will get stronger. Most modern beacons will
prompt you to change the setting to the next lowest. If you come to a point where the signal fades, mark
that spot, turn around and retrace till you find the strongest signal.
(3) Upon returning the strongest signal position, turn 90 degrees left or right and repeat the process.
This should narrow your search area.
(4) After you have cycled through the settings on the transceiver, you are ready to begin a fine search.
This is the same as above; only instead of walking you pass the beacon from hand to hand.
(5) After you have found the strongest signal on the lowest setting, DO NOT LAY THE BEACON ON
THE SNOW. It will invariably get buried. Get probes and probe for the victim in a quick efficient manner.
(6) Because of the way beacons transmit their signal you may find it helpful to turn and walk several
feet off your present course when a very strong signal is gained and lost quickly. During a fine search
point the beacon downward and rotate its orientation periodically.
(7) Speed is of the essence. Narrow down the search area as quickly as possible. In the case of
multiple burials, expose the victims face, make sure they are breathing, turn off their beacon and MOVE
ON. If you are part of a larger group you can assign someone to dig this person out.

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SECTION IV. SUMMARY
You now have a general understanding of the avalanche hazard and some of the steps you can take to
mitigate risk when moving in avalanche prone terrain.
Check on Learning.
1. What are the four elements required for an avalanche?
Terrain between 20 and 60 degrees slope angle, an unstable snow pack that contains a slab, weak
layer and bed surface, the weather conditions to create the unstable snow pack and a trigger such
as a skier.
2. Does having a slab on a slope of 30 degrees mean that the slope will slide?
Not necessarily. If there is a weak layer and bed surface below the slab and there is a trigger there is
a high probability of a slide. But the presence of a slab itself on a 30 degree slope does not mean
that the snow will avalanche.

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699-8024: Camouflage self and equipment in a snow covered environment
Motivator: You are all familiar with camouflage techniques in temperate climates. In a cold, snow
covered environment there is some additional equipment that you must use and some additional
techniques and precautions that you must take in order to camouflage yourself and your equipment.

ACTION Camouflage self and equipment in a snow covered environment
CONDITION In any snow covered environment, given individual load bearing equipment,
helmet, weapon, ECWCS, over whites and camouflage tape
STANDARD Soldier selected the camouflage outerwear appropriate for the specific terrain.
Camouflaged equipment and weapon without affecting the function. Changed
camouflage scheme as conditions changed.
Evaluation: You will be tested on your knowledge of camouflage, during a one hour written examination
been conducted. If you fail this second examination, you will be dismissed from the course.
Instructional Lead-In: This lesson provides you with some techniques and procedures for camouflage in
the snow covered environment.
Camouflage self and equipment in a snow covered environment

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Learning Step/Activity 1 – Camouflage yourself and your individual equipment using techniques
appropriate for different snow-covered terrain.
a. You are issued the over-white uniform. Simply putting these items on as the weather turns cold
does not constitute good camouflage technique. Some thought needs to be put into blending into the
surroundings and changes may be frequent to match the changing terrain.
WARNING: Camouflage paint will not be worn when temperatures are below 32º F IAW USARAK
PAM 600-2. The main reason for this is that it will become impossible to monitor soldiers for cold
weather injuries (frostbite) when skin camouflage is worn.
Camouflage
Concealment by blending in
with the natural surroundings

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b. Camouflage in a cold weather environment. These are some of the combinations that are typically
used in snow covered terrain:
(1) Thickly wooded areas- wear darker, woodland pattern, camouflage uniform
(2) Low brush or light scrub area- wear over white parka top with darker camouflage trousers.
(3) Forested areas- wear darker camouflage top with over white bottoms.
(4) Above tree line, open areas- wear full over white camouflage.
c. Additional considerations:
(1) Avoid routes requiring numerous changes in camouflage pattern
(2) Have camouflage garments handy so changes in pattern can be made fast, on the move.
(3) Like anything else there are exceptions – for example, after a heavy snowfall, complete over
whites may be appropriate for any of the terrain listed.
Camouflage Combinations for

Different Types of Terrain
• Thickly Wooded Area……….All Green
• Low Brush or Light Scrub…White Parka and Green Trousers
• Forested Area………………...Green Parka and White Trousers
• Above Treeline (open field)…All White

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d. The individual is dressed in ECWCS parka and trousers. The weapon is camouflaged with white
engineer tape to break up the outline and mimic the snow resting on the spruce branches.
Thickly Wooded Area
e. Approximately waist high vegetation. Soldier incorporates over white Kevlar cover, top and gloves,
LBV broken up with white engineer tape.
Low Brush/Light Scrub

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f. This pattern is used when moving on trails or road systems. Soldier wears over white bottoms,
ECWCS parka and standard helmet cover.
On trails/roads
g. The entire over white system is used in open areas or when operating above tree line.
Open Field

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h. Material that can be used for camouflage in the cold weather environment.
(1) Tape is good but can become brittle in cold and fall off (use cloth tape)
(2) Old over whites/cloth
(3) Spray Paint (check with unit armorer)
(4) Engineer tape
(5) Use as much white as necessary to break pattern and blend with surrounding snow cover.
Snow covered terrain is rarely solid white. Leaving some black exposed on the M16, for example,
blends better than completely covering the weapon in white.
(6) Care must be taken not to interfere with moving parts and normal equipment/weapons operation
What Can Be Used?

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Learning Step/Activity 2 – Demonstrate camouflage techniques for different terrain situations.
Give students the opportunity to establish a hasty ambush on a trail. After 15 minutes walk through and
try to identify positions.

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SECTION IV. SUMMARY
You now have experience selecting camouflage patterns in a snow covered environment.
Check on Learning.
1. What pattern should you wear in open terrain or above tree line?
The entire over white set should be worn.
2. What pattern should you wear on roads and trails?
Over white trousers with ECWCS Parka top.

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699-8030: Engage targets with assigned weapons in a snow covered environment
Motivator: It is relatively easy to hit targets on a range once you have received some basic
instruction. In fact most have you have probably shot expert or close to it. When you are on the move,
it is more difficult to come to a stop control your breathing and make good shots. Add in movement on
skis or snowshoes and it becomes even more difficult to put rounds on target.

ACTION Engage targets with assigned weapons in a snow covered environment
CONDITION Given load bearing equipment, helmet, assigned weapon, ECWCS, over white
set, skis or snowshoes with ski poles, ahkio sled and M-122 tripod, traversing
and elevating mechanism
STANDARD Soldier:
• engaged targets from a standing, kneeling and prone position on skis
and snowshoes.
• engaged targets using crew served weapons.
responsible for taking breaks in warming shelters as required. Range procedures IAW Ft. Greely range
Control and NWTC Range SOP are in effect.
Evaluation: You will engage targets from a standing, kneeling and prone position on skis and
snowshoes. This practical exercise will prepare you to move over a 10K cross country course; on the
course you will engage targets from a standing, kneeling and prone position.
Instructional Lead-In: This lesson gives you firing techniques while moving on skis and snowshoes.
Engage targets with assigned weapons in a snow covered environment

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Learning Step/Activity 1 – Carry a weapon while using skis or snowshoes.
a. Attach the sling to the rear sling swivel and the slip ring (where the hand guards attach to the
receiver).
b. Hang the weapon over your neck and firing side shoulder, muzzle down. The weapon can be
placed behind the canteen on the firing side hip to keep it out of the way while using ski poles.
OR
c. Attach the sling at the slip ring and the small of the butt stock and hang in the same manner.
OR
d. Another method is by use of a “three point sling” available commercially.
Learning Step/Activity 2 – Select individual firing techniques on skis and snowshoes.
a. Standing on Skis and Snowshoes - This firing position is best applied when fire must be
returned quickly such as during an assault. When cover is available it should be sought. Make use of
the depression around a tree trunk as it will lower the shooters profile. Do not allow snow to foul the
weapon especially while it is hot. It is a good technique for long distance and rolling terrain and it is
easy to get into. A major disadvantage is that it presents a high silhouette for the enemy. To get into
position:
(1) Assume a suitable standing firing position. Based on your situation, assume the position that will
allow you to observe and engage targets, yet minimize your exposure to enemy fire.
(2) Place the ski poles in the non firing hand in an X pattern.
(3) Place the fore stock of the weapon in the crotch of the X for support. This will require the Soldier
to squat slightly.
(4) Place the ski or snow shoe of the firing side leg in a half herring bone position.
(5) Maneuver by running on the snowshoes or kick and glide on skis. Carry the ski poles in the non-
firing hand and the weapon in the firing hand.
Standing Firing Position

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Standing Snowshoes

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b. Kneeling firing position skis
(1) Assume a suitable kneeling firing position. Based on your situation, assume the position that will
allow you to observe and engage targets, yet minimize your exposure to enemy fire.
(2) Place the ski poles in the non firing hand in an X pattern.
(3) Place the fore stock of the weapon in the crotch of the X for support.
(4) Place the ski or snow shoe of the firing side leg in a half herring bone position. Take care that the
snowshoe shovel does not injure the shin. If using skis, the firing side knee may be placed directly on top
of the ski.
(5) Point the ski or snow shoe of the non firing side leg in the direction of the target.
(6) Maneuver by running on the snowshoes or kick and glide on skis. Carry the ski poles in the non
firing hand and the weapon in the firing hand.
Kneeling on Skis

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(7) Place the knee on the firing hand side on the ski to maintain stability when the snow pack is deep
and unconsolidated.
Kneeling on Skis - Alternate

Position
c. Kneeling on Snowshoes. The technique is similar to kneeling on skis. However care must be
taken to prevent the knee/shin on the firing hand side from being injured by the shovel of the
snowshoe.
Kneeling on Snowshoes

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d. Prone firing on skis and snowshoes. Similar to the standard prone position except that the
soldier uses poles under elbows for flotation in deep snow and each ski or snowshoe is placed at ½
herringbone position. The snowshoes do not have to be placed in the ½ herringbone position. It
provides a stable firing platform and a low silhouette, but it can be difficult to get out of, especially in
deep snow.
Prone Firing Position on Skis
Prone with Snowshoes

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Learning Step/Activity 3 – Select firing techniques for crew served weapons.
a. Crew served weapons cause problems because the additional weight will cause them to sink into
snow. It may also be difficult to establish a stable firing platform on frozen ground or on ice. Effectively
seating base plates for mortars into frozen ground may also cause problems. Some of the remedies for
these problems were discussed in the Effects of Cold on Military Equipment; more detail is provided
here on emplacement issues and firing platforms.
b. Using a snowshoe for a firing platform. Snowshoes can be used effectively as a firing
platform to keep weapons from sinking in the ground. This is appropriate for the M249 SAW or the
M240 or other bipod mounted weapons. You may require additional weight of a sandbag on the
snowshoe or help from the AG to keep the weapon stable.
Using a Snowshoe for a Firing

Platform

379
b. Using an ahkio as a support. The ahkio can also be used as a platform with the
added advantage of keeping ammunition out of the snow. As noted in Effects of Cold on Military
Equipment, it is useful for the AG to carry a small bottle of methanol (windshield wiper fluid) to defrost
the weapon should it become iced over.
Crew Served - Using Ahkio as a

Support
Gunner and AG
c. M-240 machinegun in tripod mode.
(1) Mount the machinegun on the tripod and secure it to the ahkio sled and the whole system can be
moved at once if maneuver becomes necessary.
(2) Chip away ice or frozen ground for the tripod feet if the snow cover is shallow or non existent.

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(3) Fill sandbags with snow and use as a support for tripods in deeper snow in more static positions.
(4) Skis or snow shoes of the gun crew are placed in a herringbone position.
Learning Step/Activity 4 – Demonstrate individual firing techniques on snowshoes.
Note: Have students demonstrate each firing position (standing, kneeling and prone) on snow shoes.
After a dry fire run, students will get 5 rounds to demonstrate each firing position.
Learning Step/Activity 5 – Demonstrate individual firing techniques on skis.
Note: Have students demonstrate each firing position (standing, kneeling and prone) on skis.
SECTION IV. SUMMARY
You now have the skills to move and shoot on skis or snowshoes.
Check on Learning.
1. What can be used to provide a stable platform for a crew served weapon?
A snowshoe or and Ahkio sled can be used.
2. What are the advantages and disadvantages of the kneeling position?
The kneeling position offers greater stability than the standing position and is easier to get into than the
prone, but is not as stable as the prone position.

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699-8029: Construct a fighting position in snow or ice covered terrain
Motivator: Try to dig down in frozen ground and chances are you will either not get very far or will
break your shovel. But you may still have the requirement to construct a fighting position. By using the
materials at hand, you can build effective above ground fighting positions.

ACTION Construct a fighting position in a snow covered environment
CONDITION Given load bearing equipment, helmet, personal weapon, appropriate clothing,
a specific location with trees able to support a wall, a sector of fire, snow, logs,
binding materials, and pioneer tools. A location for ice crete will be furnished if
it is necessary to produce ice crete blocks. This location will have a water
source, gravel source, forms of uniform size and snow.
STANDARD Soldier:
- Constructed a fighting position wide enough for you, your battle buddy and all
your equipment.
- Ensured that fire can be placed into your assigned sector of fire. The position
has front, side, rear and overhead cover.
responsible for taking breaks in warming shelters as required.
Environmental Considerations: In USARAK, trees greater than 4 inches in diameter, in military training
areas, will not be cut down without prior approval from Range Control.
Evaluation: You will be tested on your knowledge of fighting positions, during a one hour written
examination at the conclusion of the course (Refer to training schedule for date/time of exam). You must
score a 70% on the written exam. If you fail the written exam, you will be given a second exam after re-
training has been conducted. If you fail this second examination, you will be dismissed from the course.
Instructional Lead-In: This lesson provides you with some techniques for constructing fighting positions
when the ground is frozen.
Construct a fighting position in a snow/ice covered environment

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Learning Step/Activity 1 – Select building techniques for fighting positions in the cold weather
environment.
Cold weather operations present some unique problems when constructing fighting positions. Ideally,
positions should be dug into the ground, but in very cold climates the ground may be frozen to depths
which make digging almost impossible with hand tools. Earth defenses of the conventional type are
difficult to build without engineer assistance or demolitions. Consider the following when determining
what type fighting positions to build, but always remember that, ultimately, there is no substitute for
traditional defensive positions. Defenses constructed of snow and ice will eventually disintegrate
under sustained fire, and are subject to the variability of the weather.
a. Construction materials. These are some of the construction materials that can be used to put
together fortifications when the temperatures fall below zero: snow, frozen soil, ice, stone, timber.
Construction Materials
• Snow
• Frozen soil
• Ice
• Stone
• Timber

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b. Snow is an excellent construction material, but must be moved and packed in order for it to be truly
effective at stopping projectiles. Moving and packing snow (i.e. shoveling it into piles), causes it to
consolidate and increases the strength of this material. Wind will often do some of the work for you by
packing snow into drifts that can be used as a start for shelters and fortifications.
Wet Snow
• Packs well and is easier to shape
• Becomes stronger as it sets
• Strongest when temperature decreases after construction
Dry Snow
• Less suitable for expedient construction
• Does not pack as well as wet snow
• Generally takes a few hours to consolidate (after it is moved)
Hard Packed Snow

• Wind moves snow and it consolidates into hard packed snow
• Used for fortification and expedient shelters
c. Ice Crete is created using a form (such as an MRE sleeve), and a combination of snow, soil, water
rock sand gravel or silt. When it sets it will have all of the properties of Portland cement and is an
excellent means of building above ground fighting positions when the ground is frozen solid. The
primary disadvantage of this method is that it takes water to construct, which may not be readily
available in large quantities.
Ice Crete
• Mixture of soil, water, rock, gravel, sand, silt
• Pour and tamp into forms
• Properties of Portland cement; stronger than

ice but it will generally melt faster
• Cover with snow to delay meting and to

camouflage
• Use for above or below ground positions

384
d. Small Arms penetration tables. The construction materials already noted provide variable protection.
This table shows the type and amount of material needed to stop a single 7.62 NATO round.
Small Arms Penetration Tables

Snow Feet Centimeters
Characteristics
Newly Fallen Snow 13 400
Firmly Frozen 8-10 245-300
Packed Snow 6.5 200
Frozen Snow/Water 4-5 120-150
Mixture
Ice 3.25 100
Ice Crete 1 30
NOTE: Based on penetration of a single 7.62 NATO round
e. Snow wall construction for protection from grenades, small-caliber fire and HEAT projectiles. This
chart provides additional information for construction of snow fortifications.
Snow Density Projectiles Muzzle Velocity Penetration Required

(lb per ft3) (ft. per sec) (ft) minimum
thickness (ft)
18.0-25.0 Grenade - 2.0 3.0
fragments
11.2-13.0 5.56mm 3250 3.8 4.4
17.4-23.7 5.56mm 3250 2.3 2.6
11.2-13.1 7.62mm 2750 13.0 15.0
17.4-23.7 7.62mm 2750 5.2 6.0
25.5-28.7 7.62mm 2750 5.0 5.8
19.9-24.9 12.7mm 2910 6.4 7.4
14.5mm 6.0 8.0
28.1-31.2 70mm HEAT 900 14.0 17.5
31.2-34.9 70mm HEAT 900 8.7-13.0 10.0
27.5-34.9 90mm HEAT 700 9.5-11.2 14.0
Snow walls degrade under sustained fire. Penetrations given for 12.7mm or smaller are for
sustained fire (30 continuous firings into a 1x1 foot area).
Penetration characteristics of Warsaw Pact ammunitions do not differ significantly from US
counterparts.
Figure given for HEAT weapons are for Soviet RPG-7 (70mm) and US M67 (90mm) fired into
machine packed snow
High explosive grenades produce small, high velocity fragments that stop in 2 feet of
packed snow. Effective protection from direct fire is independent of delivery method,
including newer machine guns like the Soviet AGS-17 (30mm) or US MK-19 (40mm). Only
armor penetrating round are effective.

385
f. Below Ground Positions.
Below Ground Positions

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g. Follow these guidelines in constructing positions:
(1) Ground not frozen/light snow cover – construct conventional earth defense.
(2) Ground not frozen/deep snow cover – use combination of conventional positions and above
ground positions.
(3) Ground frozen/light snow cover – if engineer support/demolitions are available, construct
conventional defenses; when engineer support/demolitions are unavailable, positions must be built
above ground.
(4) Ground frozen/deep snow cover – if engineer support/demolitions are unavailable, construct
snow defenses. Otherwise, use a combination of conventional positions and above ground positions.
Below Ground Positions

• Use conventional methods when frost line is one
foot thick or less
• If more than one foot thick, engineer support or

demolition is required
• Snow for camouflage and additional protection
• Use timber for revetment

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h. Standard rules apply for constructing overhead cover. Snow may be used in place of or with soil for
overhead cover. Use snow for camouflage.
Overhead Cover
• Logs approximately 6 inches in diameter
• 3 feet of packed snow
• Logs approximately 2 inches in diameter-

bursting layer
• Snow for camouflage
i. Above Ground Positions
Above Ground Fighting Positions

388
j. Used when digging is not possible because of frozen ground or when little time is available. Parapets
should be 8-9 feet in front and 2-3 feet thick on sides. Measure at the top of the packed snow. Flattening
the top of parapets will help to deflect rounds. Snow bags, logs, and/or ice crete should be used in the
construction of more permanent defensive positions.
Above Ground Fighting Positions

• Used when frost line is greater than one foot thick and
demo/engineer support not available; also used when
little time is available
• Dug as deep as possible
• Parapets made of snow – 8-9 feet thick in front and 2-3

feet thick on sides
• Parapets flat on top to deflect rounds
• Reinforce parapets by adding sticks, twigs, etc. to the

snow during packing
• Snow bags or logs used for revetments for greater

resistance to small arms and shrapnel
k. TOW/Machine Gun Position
TOW / Machine Gun Position

389
l. For any crew served weapon, a stable firing platform will need to be constructed. Plywood or timber will
serve this purpose when there is time to prepare defenses. In the case of the TOW/ Javelin, overhead
cover should be offset and to the rear to prevent back-blast from injuring personnel.
TOW / Machine Gun Position

• Platform of plywood or timber
• Parapets 8 to 9 feet
• Side parapets 2 to 3 feet
• Overhead cover offset to the rear
m. One type of above ground position is the snow trench. It should be dug to approximately arm pit
depth.
Snow Trench
• At least two snowshoes wide
• Pack snow in front of trench
• Excavate the trench, placing snow to the front
• Log or sandbag revetment can be used

390
n. This is a variation constructed with timber revetments for increased protection from small arms and to
prevent the shelter from collapsing under indirect fire.
Snow Trench With Wood

Revetment
• Approximately 6.5 feet of packed snow

• Snow trench dug armpit deep
• Logs or timber used for revetment
• Ensure a base platform is constructed for
TOW and similar weapon systems
o. Tree and Log Forms provide increased protection from small arms and indirect fires when below
ground positions cannot be constructed. Timber should be at least 6 inches in diameter. Minimize gaps
between logs. They can be filled with rocks, snow, sand gravel etc. and water can be used to make ice
crete inside the form, further strengthening the position. Snow should be used to camouflage the
position.
Tree and Log Form

391
p. This is a free standing version of the tree and log form. The same considerations as tree and log form
apply.
Log Form
q. The tripod supported wall can also be constructed out of timber at least 6 inches in diameter and used
as an effective above ground position. At least 8-9 feet of snow should be packed to the front of the
position.
Tripod Supported Wall: Side View

392
r. Rear view.
Tripod Supported Wall: Rear View
s. This is similar to the tripod supported wall, but is easier to construct. Again pack at least 8-9 feet of
snow to the front and ensure that the logs are completely covered for concealment of the position.
Tree Supported Wall: Oblique View

393
t. Side view of the position.
Tree Supported Wall: Side View
Learning Step/Activity 2 – Select building techniques for fighting positions in the cold weather
environment.
Give students load bearing equipment, helmet, personal weapon, appropriate clothing, a specific location
with trees able to support a wall, a sector of fire, snow, logs, binding materials, and pioneer tools. A
location for ice crete will be furnished if it is necessary to produce ice crete blocks. This location will have
a water source, gravel source, forms of uniform size and snow.
Each squad will construct a fighting position designated by the squad instructor. These positions will be
constructed in the tactical bivouac area.
SECTION IV. SUMMARY
Check on Learning.
1. What are some of the materials that can be used to construct an above ground fighting position?
Snow, ice, soil, gravel, rock, trees.
2. How much packed snow does it take to stop a 7.62mm round?
6.5 feet of packed snow.

394
699-8023: Skijor

NOTE: This is a 4:30 block of instruction
Motivator: The main advantage of skijoring is that soldiers expend minimal energy while being towed as
opposed to the often arduous tasks of cross-country skiing or snowshoeing. You and your Soldiers will be
better rested and ready for follow-on missions once they arrive at their destination. Heavy rucksacks,
crew-served weapons systems, and ahkio groups may be loaded on tow vehicles while troops skijor with
minimal gear (LBE/LBV, Kevlar helmet, and weapon). Furthermore, skijoring may allow light forces to
keep pace with mechanized or armored units without the extensive use of additional transportation
assets.

ACTION Move over snow by skijoring
CONDITION In a snow covered environment, given a SUSV or snow machine(s), two 50m
static ropes, the military ski, NATO bindings, ski poles and vapor barrier boots
(or other appropriate ski equipment as prescribed by unit), ECWCS, other
issued cold weather clothing items, ballistic helmet, goggles, LCE with 2 quarts
of water, and weapon
STANDARD Soldier moved over snow by skijoring without receiving a cold weather injury.
Safety Requirements: All exposed skin will be covered, goggles must be worn and a lookout must be
posted on the tow vehicle, and vehicle speed will not exceed 15 MPH.
Evaluation: You will observe a demonstration and then you are expected to skijor behind a snow
machine or SUSV. Your instructor may determine that you have not attained a skiing skill level that will
allow you to safely conduct this exercise. You will also be tested on your knowledge of skijoring
movements during a one hour written examination at the conclusion of the course (Refer to training
schedule for date/time of exam). You must score a 70% on the written exam. If you fail the written exam,
you will be given a second exam after re-training has been conducted. If you fail this second examination,
Instructional Lead-In: This lesson will give you an opportunity to skijor behind a SUSV and/or a snow
machine.
Skijor
395
Learning Step/Activity 1 - Prepare skijor rigging for the SUSV.
a. Connect two ropes 120 to 150 feet long to the rear of the tow vehicle. Stow rucksacks inside the tow
vehicle.
b. Sling weapons over the shoulder with the muzzle to the outside of the column.
c. Space skiers, in column of twos, at equal intervals behind the vehicle, to the outside of the ropes.
Maintain a gap of approximately ten to twelve feet between individuals.
d. Half-hitch the rope around the ski pole shafts just below the handles. Hold the poles under the
outside arm. Rest against the baskets of the ski poles.
e. Tie a small fixed loop in the end of each rope. The last soldier on each rope inserts the shafts of both
ski poles halfway through the loop. Grasp the poles on each side of the loop, in a manner similar to
water-skiing.
f. Post a lookout in the SUSV facing the rear of the tow vehicle. Establish communication with the driver.
g. Cover all exposed skin and wear goggles.
CAUTION: Skiers are never allowed to fasten themselves directly to the rope. In case of a fall they must
be able to immediately release the rope, to avoid serious injury. If a soldier falls, the skiers immediately
behind the fallen skier must be able to release the rope so that they can maneuver to avoid the fallen
skier.
Learning Step/Activity 2 - Move over snow by skijoring.
a. The vehicle operator:
(1) starts and stops gradually.
(2) follows the easiest route that the terrain permits.
(3) does not exceed 15 MPH.
(4) Avoids steep slopes, obstacles, and sharp turns. Whenever these cannot be avoided, reduces
speed to allow the skiers to negotiate the obstacle.
b. The lookout advises the driver when to speed up, slow down, or stop.
c. Personnel skijoring:
(1) When the vehicle begins to move, shuffle your feet forward a few steps. Gradually lean back and
place your weight onto the tow rope. Failure to do so will most likely result in the skier being jerked
forward abruptly enough to cause a fall.
(2) Once under way, lean slightly backward. Keep your upper body generally erect, with the knees
slightly flexed, to act as shock absorbers. The skis may be in a slightly wider than normal stance, and
one ski should be slightly advanced. This will increase your stability, as well as your ability to
compensate for irregularities in the terrain and the vehicles' rate of movement. You should be able to
relax, but you must remain alert for obstacles.
(3) If a sharp turn is necessary, speed is reduced to a walk. You can walk/shuffle around the corner. Do
not drop or step on the tow rope. Once the last skier has completed the turn, speed is gradually
resumed.
Skijor
396
(4) When descending hills, keep the rope taut by using a braking wedge. If you find that you are
unable to control the rate of descent, and collision with the vehicle is imminent, drop the rope and
maneuver to avoid the vehicle. On short downward slopes the vehicle should temporarily increase speed
so that you do not need to brake. On longer steep slopes, you should descend independently of the
vehicle and regain the rope at the bottom of the hill.
(5) If you fall, release the rope and roll to the outside of the column to avoid being run over by the next
soldier on the rope.
NOTE: Students that have had a minimum of 40 hours of ski training and have demonstrated a
reasonable proficiency on skis (as determined by NCOIC and instructor consensus) will have the
opportunity to skijor.
NOTE: Using the techniques described above students will execute a skijoring exercise on the trails
surround the Black Rapids Training Site. All Risk Management procedures will be followed IAW the
USARAK Pamphlet 385-4 Risk Management Guide for Cold Weather Operations.
Skijor
397
SECTION IV. SUMMARY
You now have practical experience skijoring. You can use this technique to move Soldiers efficiently
provided they are proficient skiers.
Check on Learning.
1. What is maximum speed of the tow vehicle?

Answer - 15 MPH.
2. How do soldiers hold the rope?

Answer - The rope is half-hitched around the ski poles just below the handle.
Skijor
398
Appendix A: Cold Weather and Mountain Equipment
It can be frustrating to order equipment for your unit for cold weather/mountain operations. Much of the equipment is
either not in the Army inventory or has been discontinued from the inventory. It is often up to units to research and
procure equipment. This is a brief information paper that consolidates equipment information along with POC information
for ordering this equipment. We update this information twice each year. Prices change too frequently, so they are not
listed. The commercial off-the-shelf gear (COT) gear we have listed here is tested and works in very rough conditions.
By no means is it the only option. Most of the COT providers offer a significant government discount. If you have specific
needs that are not listed here, contact us and we can make equipment and source recommendations.
www.wainwright.army.mil/nwtc/
1. Ahkio Group: There is no standard for ahkio group contents. The ahkio sled is no longer manufactured. In all
likelihood, units will not tow this sled for long distances in training or actual operations. But it is still one of the most
effective methods for managing the tent and stove for a squad sized element and is the main reason we still provide
instruction on it. It makes accountability simple and packages everything a squad needs for easy transport. The sled is
still available through surplus stores. IMF can repair the sled and fabricate the cover for the sled.
ITEM # NSN or ordering information

Scow-sled, 200 lbs. capacity (ahkio) 1 8920-00-273-8211
Tent 10-man Arctic, complete with pole 1 8340-00-262-3684
board
Pole Board 1 Cut a 1’x1’ piece of plywood. Cut a second 5”x5” piece
of plywood. Bore a hole that is slightly larger than the
tent pole diameter into the center of the 5”x5” piece
and glue it to the center of the 1’x1’ piece.
Door Poles 2 Cut two 6 foot poles that are 2-3 inches in diameter
Space Heater Arctic (SHA) 1 4520-01-444-2375
Stove board 1 Cut a piece of plywood 3’ x 2’, rip it lengthwise in half,
cover top side with galvanized sheet steel and re-join
the two pieces with hinges. This allows you to fold it in
half for storage.
Five gallon fuel can 1 7240-01-337-5268
Five gallon water can 1 7240-00-089-3827

D-handle coal shovels 2 5120-00-188-8446
Machetes (with sheath) 2 5110-08-13-1286
Squad cook sets 2 7630-00-272-2485
Squad stoves 2 NWTC uses the MSR Whisperlite Internationale OR the
MSR XGK-EX (this stove can be fitted with a jet that
burns JP-8) Contact MSR www.msrgear.com
Fuel bottles 2 Order from MSR
Bow saw 1 5110-00-340-3276
Ax 1 5110-01-416-7827
Hammers 2 lb. 2 5120-00-203-4656
50 or 60m static rope OR Army 120’ 1 4020-01-526-6234 (NWTC uses Blue Water Ropes/
Greenline contact APEXX 404-551-4913 or www.apexxsales.com )
Trace, ahkio pulling, 9 ft 3 Cut from static rope (you can buy in spools and cut)
Tow Rope 27 feet 1 Cut from static rope
Harnesses, Man’s, Sled (ahkio towing) 4 8465-00-255-8413
Aluminum oval carabiners (used for towing 8 NWTC uses Omega Pacific Ovals / contact APEXX 404-
and rescue systems) 551-4913 or www.apexxsales.com
Aluminum Locking Pear Shaped Carabiners 2 NWTC uses Tactical Jake HMS Screw Lok / contact
(used for rescue systems) APEXX 404-551-4913 or www.apexxsales.com
25’ 1 inch tubular nylon webbing (used for 1 NWTC uses climb spec webbing / contact APEXX 404-
rescue systems) 551-4913 or www.apexxsales.com
6’ 7mm cordelette 2 NWTC uses Blue Water 7mm accessory cord / contact
APEXX 404-551-4913 or www.apexxsales.com
Fire extinguisher 1 4210-00-165-4703
Lantern, gasoline*, with case 1 NWTC utilizes a Coleman Brand White Gas Lantern
Recommended Repair Items
ITEM NSN
CLIP, LINER 8340-00-242-7872
CLOTH, DUCK, 5 YARDS (Ahkio Cover) 8305-00-926-6171
D-RING, ONE INCH BRASS 5390-00-260-1414
LINER, TENT 8340-00-262-3698
PEAK PLATE 8340-00-965-4432
PIN, TENT, STEEL 8340-00-823-7451
POLE, TENT 8340-00-188-8413
SLIP, TENT LINE 8340-00-205-2759
399
TENT LINE, 12' 6" 8340-00-262-3658
TENT LINE, 19' 8340-00-262-6911
2. Snowshoes. For most units, snowshoes are the way to go. The old military magnesium snowshoe works, but is not
available through the Army inventory. You can still get them from military surplus outfits, but the bindings are more
difficult to come by.
We highly recommend the Mountain Safety Research (MSR) Denali Snowshoe. Ask for the military version. It is black
and grey and comes standard with 8 inch flotation tails. Do not purchase the 4 inch flotation tail. Contact MSR at
www.msrgear.com . This is the same company that makes the squad stoves listed for the ahkio group.
3. Skis. We recommend a single camber, metal edged, waxable ski. This allows travel in nearly any snow covered
environment. Waxless skis work well in some environments and very poorly in others.
There are three NSN military skis made by ASNES. They have a significant camber to them and are wide enough for
heavily loaded military skiers. They are great for cross country movements but are harder to ski in more difficult
backcountry terrain. They can be ordered through Norsk Enterprises (see below).
Karhu has also designed skis for the military. The Marine Corps is testing a ski made by Karhu. It is a very short, very fat
ski with a waxless base and a simple snowboard style binding. We do not have experience with this ski. Contact the
Marine Corps Mountain Warfare Training Center for more information http://www.mwtc.usmc.mil/index.htm .
4. NATO 120 Ski Bindings are made by Rottefella. They are simple to use, easy to mount and fit any military boot. Norsk
Enterprises is the only U.S supplier. POC is:
2413 West Algonquin Road

Suite 216
Algonquin, IL 60156
Cage Code: 0EHG8

Phone: 847-854-6074
Fax: 847-854-6075
Mobile: 615-400-8026
E-mail: jsarles@norskent.com
5. Ski Poles. We recommend any of the Black Diamond Equipment Flick Lock poles. They are collapsible and the flick-
lock mechanism is difficult to break and easy to adjust/repair. Other ski poles use an internal camming device that is
difficult to adjust or repair. www.bdel.com
6. Ropes, Webbing, Cordage, Harnesses, Carabiners and other specialty mountaineering gear can be ordered from
Appex Sales. This is a veteran owned company. The staff understands military needs and can help you get what you
need for military mountaineering. They also supply FAST and SPIES ropes. www.apexxsales.com . Black Diamond
Equipment www.bdel.com also supplies quality equipment and has significant discounts for government purchasers. We
buy our rope, cordage and webbing from Appex Sales (military colors from Blue Water ropes) and our most of our
carabiners, harnesses and other hardware from Black Diamond (cheaper and better quality/durability).
7. Tents and Army Approved Heaters. Hunter Manufacturing makes most of the Army Approved Heaters in the Army
inventory. Below are the different types of heaters available and the tents/shelters that they work with. We use the SHA
and the 10-man arctic tent. The ten-man tent is still the simplest, cheapest shelter available; combined with the SHA is
hard to beat.
400
Hunter Manufacturing Company
30525 Aurora Rd
Solon, OH 44139
sales@huntermfgco.com
www.huntermfgco.com
Heater Models and Applications
Item Description Item Description

Space Heater Small UH68ODH
4520-01-478-9207 PN 168325
16”L x 9” W x 14” H 30”L x 11” W x 24” H
32 Lbs. 125 Lbs.
12,000 BTU/Hr 60,000 BTU/Hr
110 VAC, 450 Watts
Space Heater Arctic Large Capacity Field

4520-01-444-2375 Heater
17”L x 9” W x 17” H 4520-01-500-1534
41 Lbs. 62”L x 40”H x 44.5W
25,000 BTU/Hr 622 Lbs.
400,000 BTU/Hr
Self-Powered, Diesel Engine
H45 Space Heater MTH150
4520-01-329-3451 PN 15000
18” Dia x 24” H 56”Lx26”Wx31”H
65 Lbs. 200Lbs
45,000 BTU/Hr 120,000 BTU/Hr
110 VAC, 12 Amps
Space Heater Convective MTH150CP

(SHC35) PN 15000-1
56”Lx26”Wx31”H
4520-01-431-8927
200Lbs
40”L x 14” W x 18” H
120,000 BTU/Hr
74 Lbs.
110 VAC, 12 Amps
35,000 BTU/Hr
CBRN Ready
Self-Powered
Space Heater MV60S-1
Convective (SHC60) PN 53457-1
4520-01-520-6477 51”Lx16.5”Wx25”H
44 ¾ ”x 17”x19” 115Lbs
98Lbs. 60,000 BTU/Hr
60,000 BTU/Hr 110VAC, 4.75Amps
Self-Powered
UH68G1 A20, Space Heater
Space Heater 4250-01-396-2826
4520-01-203-4410 27”L x 8” Dia.
26”L x 22”H x 10W. 38 Lbs.
60,000 BTU/Hr
110 Lbs 24 VDC, 20 amps
60,000 BTU/Hr
See applications
110 on the other side.
VAC, 450 Watts
401
Application SCT 5 and GP GP 305 MCPS SSS TEMPER MGPTS MGPTS
10 man Small Medium Tent Small Medium
Arctic
Space X
Heater
Small
Space X
Heater
Arctic
H45 X2 X X2 X2 X2 X
SHC 35 X X2 X X X2 X2 X
SHC 60 X X X X X X X
UH68ODH X X X X X X X
MV60S-1 X X X X X X X
MTH150 X X X
MTH150CP X X X
Application MGPTS MSS LME 6D31 CBRN LME Expansible Hard Cargo Vehicle
Large Dome Van Body Wall
Shelter
LCFH X X X X X
MTH150CP X X X X X
A20 / CBH X X X X
UH68G1 X X X
ABBV. DESC. Floor Dim./Sq. Ft.

SCT Soldier Crew Tent 10’x10’
120 sq. ft
10 Man 10 Man Arctic 8’9’’ Octagon
Arctic 200 sq. ft
MCPS Modular Command Post System 11’x11’
121 sq. ft
MGPTS Modular General Purpose Tent System 36’x18’
Medium 648
GP Medium Tent, General Purpose, Medium 32’x16’
512 sq. ft
SSS Small Shelter System 20’x32’
650 sq. ft
MSS Medium Shelter System 52’x 29.5’
1500 sq. ft
LME Lightweight Maintenance Enclosure 32’x25’
800
TEMPER Tent, Extendable Modular Personnel 32x20’
640 sq. ft
305 Base-X Expeditionary Shelter 18’ x 25
450 sq. ft.
6D31 Dome Base-X Expeditionary Shelter, (TOC, UOC) 27’ x 31’
615 sq. ft.
402
DEPARTMENT OF THE ARMY
HEADQUARTERS, U.S. ARMY ALASKA
724 POSTAL SERVICE LOOP #5000
FORT RICHARDSON, ALASKA 99505-5000
APVR- RPTM 20 Sep 2007
MEMORANDUM FOR SEE DISTRIBUTION
SUBJECT: Cold Weather Physical Training Policy (CG/CofS Policy Statement #0-08)
1. General: Leaders are our first line of defense against cold weather injuries (CWIs). I expect
each and every leader to thoroughly analyze the associated risks and exercise sound judgment,
during the conduct of cold weather physical training (PT). You are expected to maintain an
aggressive PT program, but not at the expense of unnecessary CWIs for your Soldiers. It is
imperative that leaders train and educate Soldiers to train and operate in the cold without injury.
To that end, I expect each of you to directly supervise your Soldiers to ensure that they possess
and properly utilize the right clothing/equipment for all training activities.
2. Applicability: This policy applies to all U.S. Army Alaska (USARAK) units.
3. Procedures: During the winter months (Oct –Apr), all major subordinate commands
(brigades, tenant units and separate commands) will contact the Command Operations Center
(COC) at Fort Richardson or the Post Staff Duty Officer at Fort Wainwright to determine the
temperature (including wind chill) prior to the start of PT. Care must be exercised as
temperature variations of between 10 and 20 degrees are possible, depending on the time of day
and training location. Leaders must ensure that each Soldier is prepared to train under the
coldest temperature for the given time period. Individuals may wear additional clothing such as
long underwear, or upgrade to a warmer glove/mitten, as necessary to avoid CWIs.
Commanders may always determine that additional protective clothing must be worn, based on
local conditions. Use the following guidance as the minimum standard for the conduct of PT
during extreme conditions:
PT UNIFORM
Polypropylene top and Arctic field uniform,
Army PT shirt Black
Temperature PFU bottom, trigger finger polypropylene, balaclava, VB
& shorts with gloves,
(Fahrenheit) sweats mittens, balaclava (with boots, gortex, trigger finger
running shoes balaclava
arctic mittens carried) mittens, arctic mittens
45 degrees and
X
warmer
44 to 33 degrees X X
32 to –10 degrees X X X
-10 to –25 degrees X X X
Below –25 degrees
(including wind X X
chill)
APVR-RPTM
SUBJECT: Cold Weather Physical Training Policy (CG/CofS Policy Statement #0-08)
a. At temperatures (including wind chill) of -10 to -25 degrees Fahrenheit, units will continue
to conduct normal PT. Units should conduct warm-up/stretching, conditioning and cool-down
indoors. In this temperature range, the PT uniform consists of Army PFU sweats, polypropylene
tops and bottoms, running shoes, trigger finger mittens, balaclava, and arctic mittens (arctic
mittens carried). If the balaclava is worn down during the run, it must stay down and over the
nose until the unit moves indoors. If the temperature is below -20 degrees Fahrenheit, units will
not spend more than four minutes outdoors before or after the run, and commanders should
reduce the distance/duration of the run (recommend four miles maximum). At this temperature
and lower, unit commanders will allow Soldiers to move to a warm facility during PT if they feel
there is potential for injury.
b. At temperatures (including wind chill) below -25 degrees Fahrenheit, Soldiers will wear
the arctic winter field uniform consisting of polypropylene, VB boots, goretex, trigger finger
mittens, arctic mittens, and balaclava. Commanders should conduct an alternate form of aerobic
PT, such as snowshoeing or skiing. Indoor hallway/stair runs are authorized. Units will conduct
all warm-up and conditioning indoors.
4. Reductions in the amount of protective clothing prescribed in the chart above may only be
authorized by battalion commanders or above. This guidance will be included in the next
revision of USARAK Regulation 350-1, Training.
5. Prevention of CWIs is a leader and individual Soldier responsibility. Consult USARAK

Pamphlet 385-4, Risk Management Guide for Cold Weather Operations prior to execution of PT
in extreme temperatures. By adhering to these guidelines and accepting the philosophy that no
cold weather injury is acceptable, leaders can conduct safe and demanding PT.
STEPHEN R. LAYFIELD
Major General, USA
Commanding
DISTRIBUTION:
A
DEPARTMENT OF THE ARMY
HEADQUARTERS, U.S. ARMY ALASKA
724 POSTAL SERVICE LOOP #5000
FORT RICHARDSON, ALASKA 99505-5000
APVR-RDZ 20 Sep 2007
MEMORANDUM FOR SEE DISTRIBUTION
SUBJECT: Fuel-Fired Space Heater Safety (CG/CofS Policy #0-14)
1. References:
a. Technical Manual (TM) 9-4520-257-12&P, Operator’s and Unit Maintenance Manual for
Heater, Space, Radiant, Large (H-45) 30 September 2003.
b. Technical Manual (TM) 10-4520-261-12&P, Operator’s and Organizational Maintenance

Manual, Space Heater Arctic (SHA) 1 December 2001.
c. Technical Manual (TM) 10-4520-262-12&P, Operator’s and Unit Maintenance Manual for
Space Heater Convective (SHC) 29 January 2002.
d. Technical Manual (TM) 10-4520-263-12&P, Operator’s and Unit Maintenance Manual for
Space Heater Small (SHS) 15 November 2001.
e. Army Regulation (AR) 600-55, The Army Driver and Operator Standardization Program
(Selection, Training, Testing and Licensing) 31 December 1993.
2. Commanders and leaders at every level will enforce the following policy on fuel-fired space
heaters:
a. Every Soldier that goes to the field will be trained and licensed to operate and maintain
the specific space heater used within that organization. This training will be recorded on the Soldier’s
DA Form 348, Equipment Operator’s Qualification Record or the computer-generated DA Form 348
and OF 346, U.S. Government Motor Vehicle Operator’s Identification Card per AR 600-55.
b. Unit Tactical Standing Operating Procedures (SOPs) will be reviewed and updated
immediately addressing policy and procedures on use of space heaters. Written risk assessments will
be prepared prior to the operation of all space heaters.
c. Only authorized space heaters and fuel will be used and fuels will not be mixed. The
authorized Family of Space Heaters (Encl 1) and fuels used in order listed within U.S. Army Alaska
are as follows:
APVR-RDZ
SUBJECT: Use of Fuel-Fired Space Heaters (CG/CofS Policy #0-14)
(1) Space Heater, Model H-45, Primary liquid fuels; Diesel Fuel (DF-A, DF-1, DF-2) Jet
Propulsion Fuel (JP-8 JP-5), Kerosene, Jet A-1, Jet A ; Alternate fuels; (gasoline and JP-4 in
emergencies only) wood or coal.
(2) Space Heater Arctic, (SHA) Primary liquid fuels; Diesel Fuel (DF-A, DF-1,
DF-2), Jet Propulsion Fuel (JP-8, JP-5) Kerosene, Jet A; Alternate fuels; wood or coal.
(3) Space Heater Convective (SHC) Primary liquid fuels; Diesel Fuel (DF-A, DF-
1, DF-2), Jet Propulsion Fuel (JP-8); Alternate fuels; Kerosene, JP-5.
(4) Space Heater Small (SHS) Primary liquid fuels; Diesel Fuel (DF-A, DF-1,
DF-2), Jet Propulsion Fuel (JP-8); Alternate fuels; Kerosene, JP-5.
d. Space heaters will be set up and operated in accordance with the applicable TM, operator’s
manual or instructions. The manual or instructions will be on site at all times.
e. When a space heater is in operation, a fully dressed, licensed and alert fireguard must be
monitoring the heater at all times. If the space heater is not in operation, no fireguard is required.
f. Unvented space heaters, i.e., bullet heaters, will not be used in tents used for sleeping, living, or
administrative work areas occupied by personnel, (i.e., Tactical Operations Center)
.
g. An operational fire extinguisher (minimum 5 lbs) will be present in each tent where
space heaters will be operated. All personnel will be familiar with the type of fire extinguisher and
trained on the operation of that extinguisher.
h. Leaders will inspect each space heater prior to operation, ensuring proper assembly, a
licensed operator is present, and proper fuel is available and being used.
3. Leaders must set the standard, ensure that their subordinates know the standard, and conduct
follow-up actions to ensure those standards are being followed.
STEPHEN R. LAYFIELD
Major General, USA
Commanding
DISTRIBUTION:
A

Cold Weather CWLC CWOC ALIT Student Handout Winter 2008 2009

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United States Army Alaska

Northern Warfare Training Center

Cold Weather (CWLC, CWOC & ALIT)

“Battle Cold and Conquer Mountains”

Subject Area Page

Cold Weather and Mountain Medical

Cold Weather Clothing and Equipment

Planning Considerations for Over Snow Movement

Tent and Stove Drill

Subject Area Page

Effects of Cold on Miltary Equipment

APPENDIX A Cold Weather and Mountain Equipment Information 399

CG/CofS Policy Letter #0-08: Cold Weather Physical

CG/CofS Policy Letter #0-14: Fuel Fired Space Heater

SECTION II. INTRODUCTION

Terminal Learning Objective (Slide 2)

Analyze Terrain in Cold Regions

Risk Assessment: Low for classroom instruction.

Environmental Considerations: None

Analyze Terrain in Cold Regions

Learning Step/Activity 1 –Define the acronym OCOKA.

Terrain Analysis: OCOKA

Analyze Terrain in Cold Regions

Cold Regions of The World

Analyze Terrain in Cold Regions

Cold Regions of The World

Analyze Terrain in Cold Regions

Extremely high winds not uncommon

Summer temperature range of 44-51ºF; record high of 79ºF

Winter temperature range of -19 - -26ºF; record low of -54ºF

Snow cover 9 months per year

Analyze Terrain in Cold Regions

Summer temperature range of 66-73ºF; record high of 96ºF

Winter temperature range of -15 - -19ºF; record low of -81ºF

Snow cover 6-8 months per year

Analyze Terrain in Cold Regions

Temperature varies greatly- extreme hot to extreme

Weather is difficult to predict

Presents obstacles to ground

Re-supply and casualty

Best terrain for small, self-

Analyze Terrain in Cold Regions

Analyze Terrain in Cold Regions

Normally covered in tussocks

Difficult to move through in summer

Analyze Terrain in Cold Regions

Analyze Terrain in Cold Regions

Ground temperature 32°F or less for 2 or more years

Continuous in the Arctic

Discontinuous in Subarctic and further south

Temperate regions free from permafrost

Thickness varies from a few feet to over 1000 feet

Tundra keeps permafrost from thawing

Frozen ground prevents drainage

Fighting positions difficult to dig

Analyze Terrain in Cold Regions

Many standing pools of water

Very difficult to drive through in summer

Analyze Terrain in Cold Regions