The pangs of war corrupt the brightest mind into destruction and annihilation and at the end of the day all they are left with are the scars, mental and physical. I guess what the purpose of the movie was exactly this i.e to convince at least some of them that its more than just killing and there are many other ways to serve. That being said, wars have transcended religion and beliefs. People fight for petty reasons today given the outreach of social media. The new age war is fought digitally and in a way that is good for there is lesser bloodshed (though the mental pressures have added).