Roger Harris in “Unfinished Business”

Soldiers adapt. You go over there with one mind-set, and then you adapt. You adapt to the atrocities of war. You adapt to killing and dying. After a while, it doesn't bother you. Well, it doesn't bother you as much. When I first arrived in Vietnam, there were some interesting things that happened and I questioned some of the Marines. I was made to realize that this is war, and this is what we do. And after a while you embrace that: This is war. This is what we do