I think this truth becomes very real for people who are deployed. It seems as though many people have to detach from their overall empathy to cope, and others cannot, so it leaves scars on the psyche. Either way it is very difficult for people to come back to society afterward. I believe if there is a real urgent cause, then taking another person's life can be justified.

We see this in and out of war. If I needed to kill to rescue a loved one from their would-be murderer, I would. Maybe there were times in the past when war consisted of two sides who both held beliefs that they were willing to kill and die for. This is no longer the case. People are paid to fight in wars that they have little say in, and little to do with. It is because of this that I believe many soldiers are unable to cope with what they are ordered to do.