if there was, there would be no war in the first place. battle is identical to jungle survival. only stupid people who amuse themselves with paintball and "Green Zone" war movies think there is such a thing as moral war. if you have actually been there, you know there is not.
U.S., allies conduct 31 air strikes in Syria and Iraq against ISIS militants (Reuters)
from the article: 'I was stabbed in the back,' says soldier who used human shield in Gaza