It's not actually THAT interesting.
It was a WW2 reenactment, which is 80% just hanging out at your camp between battles, and you can do all sorts of "unscripted" stuff then. My group (soviet) made friends with a couple of the Wehrmacht guys the night before.
I was resting against a tree alone at camp and one of my new friends just snuck up behind me and choked me out. Scared the fuck out of me, but I realized i wasn't actually in danger before i passed out. I was out for maybe 30 seconds.
He did this in front of tons of visitors too, apparently they loved it
Also got to watch that same guy choke out another from my group, which made me realize how retarded I must have looked when it happened to me.