„In the US. Infantry Manual published during World War II, the soldier was told what to do if a live grenade fell into the trench where he and others were sitting: to wrap himself around the grenade so as to at least save the others.“
If no one "volunteered," all would be killed, and there were only a few seconds to decide who would be the hero.
Anatol Rapoport (1988), quoted in: William Poundstone (2011) Prisoner's Dilemma. p. 203
1970s and later