To be fair you are watching mainly Vietnam films and expecting it to be like modern army life (which you admit you don't know about really), I reckon that is a pretty odd way of looking at it. At least you have saved the best until last but there are very few films that will ever show you what the real experience is like, I've done a fair bit of snowboarding and no video comes close to the feeling when I do it, same for mountain biking etc. They can give a rough approximation but you just have to try it mostly to know.
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