I'm still waiting for a reply to that!?
My old friend is now a retired Lt Col (Army) and the reason he retired is when the Army started allowing sneakers on forced marches!
Personally, I don’t consider it hard to figure out, real life isn’t the movies, three guys had been partying and they were taken off balance and were not in a frame of mind to fight two street toughs, for one thing, not all GIs are born brawlers, regardless of what they do in the service.
Let’s not pretend that rough locals in military towns have not been beating up and mugging GIs since the beginning of time, for one thing, they get to move when they are feeling aggressive and tough, not having that mood imposed on them when they may not be in that frame of mind.