Once upon a time in a far away land (Vietnam 1968) my Sergeant caught two Privates, Jones and Smith, asleep in a fox hole while on guard duty. This is a very serious offense, especially in a combat area, and the Sergeant brought the men to me, the commander, for possible court martial.
I asked Smith what he had to say for himself, and he replied, "Sir, it is all Corporal James fault, you see he gave Jones two six packs of beer while we were in the barracks, and Jones gave me one of them. We took the beer with us when we left to go on guard because we did not want someone to steal it. Later we got thirsty just sitting there in the fox hole, and drank one beer each, and before we knew it we had drank all the beer, and I guess we sort of passed out. But you have to remember, Captain, that if Corporal James had not given us the beer, we would not have drank it, and would have been awake, so Corporal James should be in trouble not us." Smith then said, "That's right Sir!"
Needless to say, I did not court martial the privates for sleeping on guard, but did court martial them for being drunk on guard duty, which is a more serious offense.
This is a true story but the names were changed to protect the stupid.