Another thing: Some time ago i thought about a game called "empathy" which comes along as lets say military shooter in the cod way. In missions you have the order to kill some one, but if you choose to kill anyone or engage with negative things the mission fails but not instantly after the player finished a level ONLY then you get the message that the mission is failed, as punishment in some way. Such things would occure as lets say you encounter a farmer which would be affected in a negative way or even gets killed if you carry out your orders, and you see he has kids and a wife a truely faithful and truely good family and more, of course this would onyl work if the whole game would be a very large level, because this wouldnt work a second time, it must leave the player behind shocked, the only game where i encountered such things in a quite different way was HOMEFRONT, which was a truely awesome and deeply though out game. peace <3
another aspect would be that you yourself get betrayed by your LEADERS and killed in the end of the game if you percisly follow orders...
and in the credits you see pics (available) of humanities worst war crimes and how sick humans were treated wihtin wars