" I can tell from the crack of a rifle shot the type of weapon fired and what direction the bullet is traveling. I can listen to a mortar pop and know its size, how far away it is. I know instinctively when I should prep a tree line with artillery before I move into it. I know which draws and fields should be crossed on line, which should be assaulted, and which are safe to cross in column.
I know where to place my men when we stop and form a perimeter. I can shoot a rifle and throw a grenade and direct air and artillery onto any target, under any circumstances. I can dress any type of wound, I have dressed all types of wounds, watered protruding intestines with my canteen to keep them from cracking under sun bake, patched sucking chests with plastic, tied off stumps with field expedient tourniquets.
I can call in medevac helicopters, talk them, cajole them, dare them into any zone. I do these things, experience these things, repeatedly, daily. Their terrors and miseries are so compelling, and yet so regular, that I have ascended to a high emotion that is nonetheless a crusted numbness. I am an automaton, bent on survival, agent and prisoner of my misery. How terribly exciting. And how, to what purpose, will these skills serve me when this madness ends?
What lies on the other side of all this? It frightens me. I haven't thought about it. I haven't prepared for it. I am so good, so ready for these things that were my birthright. I do not enjoy them. I know they have warped me. But it will be so hard to deal with a life empty of them. "
― James Webb , Fields of Fire