Yup, I read an account of a man who survived for a couple of years in the hellscape of Sarajevo during the war. He had a lot of detail, but the big points were

Yup, I read an account of a man who survived for a couple of years in the hellscape of Sarajevo during the war. He had a lot of detail, but the big points were that you needed a group. "A lone wolf is a dead wolf", he said. The key to survival was your group, being able to pool resources, watch each other's back, go out in groups, negotiate, etc. (Sorry I've not got a link right now.)