Who ever thinks that these atrocities won't occur in war? The mindsets of the people who commit these actions are not a far leap from the mindset that a soldier has to maintain in order to kill enemy combatants day in and day out.

Every war there's big civilian massacres and other major moral abridgments no matter what the combatants' PR department spews out. We should be realistic about that.

It's not an excuse for those that committed or knew about this, but it shouldn't be unexpected.