Perhaps in many ways this paragraph from Sebastian Junger's incredible book, WAR, says it all:
"I prayed only once in Afghanistan," O'Byrne [a soldier] wrote me after it was all over. "It was when Restrepo [a medic] gopt shot, and I prayed to god to let him live. But God, Allah, Jehovah, Zeus or whatever a person may call God wasn't in that valley. Combat is the devil's game. God wanted no part. That's why our prayers weren't answered: the only one listening was Satan."