You KNOW this animated short was made for the military guys, not for kids, when they tell you right in the beginning was SNAFU stands for.....well, almost. They hesitate of the f-word, shake the camera...and then say "fouled" up instead of what it really stands for, but you get the message. The explanation was there because this was the first of the "Pvt. Snafu" cartoons which had the purpose of giving a common-sense message to soldiers on how to behave during a tense war situation.
"Pvt. Snafu" is introduced as "the goofiest solider in the U.S. Army." Actually, as they explain here, he represents dumb soldiers, guys who mean well but "foul up" all the time. He used as an example of how NOT to do things. Mainly, he just dreams about naked women. (Well, I can't blame him on that one.)
There aren't really humorous, at least today, but they served a good purpose and they part of World War II history, even if in a very small way.