Holly2003 wrote: I wonder will these American troops be able to turn off all that aggression when they return to the USA?
Studies of the war in the Pacific (1942-45) suggest there's a correlation between intensity of combat and the propensity to commit war crimes. Like it or not, every human being has the capacity to do things like this in extreme circumstances. However, there are cultural differences between countries that make some armies more likely to do these things than others. And, frankly, the US is a violent nation and it's unsurprising that US troops feature here. (Warning to idiots: read that carefully before replying!) The nature and behaviour of the enemies is also a factor: the more they differ from eachother (race, religion etc) the easier it is to dehumanise them and more likely there is to be war crimes. But, I repeat, in certain circumstances ALL armies are capable of war crimes.
Except maybe the Danes: too many hippies in their military ...
Oddly coincident to your initial point is a 23 year old ex marine and Iraq vet who was just arrested in California for a string of serial killings involving the stabbing deaths of homeless men. Extreme example and of course unknown what if any effect his Military service may have had, but thought I would mention it. There is some indication that he was kicked out of the Military, which may men that he was a screwball to begin with, but I wondered as well if a sudden and ignominious exit would undermine normal transition back to civilian life and civilian expectations.
I found your point about the nature and behaviour of the enemy, differences etc. interesting. In the video of the Marine incident there is a brief view of one of the dead men's long, narrow bare feet. I had what I thought was an odd gut response to that small and seemingly irrelevant thing - I thought there was something about that man's foreign and exotic feet, bare rather than shod in something suitable for fighting, that would enrage or disgust those Marines. I dismissed it as kind of a silly and perhaps melodramatic thought, but maybe not.