This is indeed a very boring and predictable copycatting movie, a "The Dirty Dozen", "The Guns of Navarone", "The Heroes of Telemark (yeah, more like this one copycatted)", and "Where Eagles Dare (copycatted some from this one too) British wannabe but a disastrous one with very weak script and bad casting job. Guys became commandos in this movie were just a bunch of hot-head yoyos who were so easily to cry, yell, shout... and their physical conditions (one of the guy was so skinny) to carry out a dubious mission were also very bad and weak, absolutely unqualified for a tough and dangerous mission. Went to the severe Scandinavian weather and terrain with poor preparation, inappropriate winter gears, logistics, fighting skills.
There was nothing special of their mission, because it's so vague, not Nazi's underground heavy water or atomic bomb development factories. The storyline was just a very thin straight line, so predictable and so boring. The movie just used Sean Bean to fool us to watch it, but the weak screenplay simply didn't give him anything to look great or even good. This is a very bad imitation of those great war movies but failed from the very beginning, never took off in the air 50 feet high and immediately crashed. Watching it was like chewing the same gum over and over for two hours.