We're all judging this on the premise that we know that they were civvies. If they were actual armed extremists, nobody would've cared. That's why the soldiers act like it's another day at the office (they've been there for quite a while), even tough they made a fatally wrong assessment of the situation. I am for punishment of the soldiers for failing their task, but I won't call them mentally unstable. The most trouble I have with the whole thing is that the army didn't want to acknowledge their mistake afterwards. It's all about keeping appearances for them, for a war they shouldn't have started in the first place.