I don't see this as particularly shocking. I'm surprised this stuff doesn't happen a lot more considering the immense stress of being in a situation like that for any length of time.
That's not an excuse - the guilty party ought to be punished severely (life in prison, etc) but this is part of armed conflict and always will be. Thankfully now most civilized countries do handle it well and punish the offenders. Not too long ago (eg the previous foreign army in afghanistan) probably would have laughed.