Gosh, I sure remember the arm punching, although as I recall nobody ever hesitated to wince and complain, except you did have to laugh it off.
As I remember (wincing) that’s where the term came from
“Two for flinching!”.
Probably an old Marine Corps game...fun guys Jarheads.
Course not like the old Corps, when a bar fight was
considered good clean fun and garrison belts would
be wrapped aroung fists with the buckle out.
Ah the old days.../s