I remember talking to my Grandpa about his service, he was a BAR man in Europe and he said that he was suppose to have a designated "assistant BAR gunner" who would carry a bandolier of BAR magazines and that each person in the squad was supposed to carry an additional BAR mag as well.
He said in practice, however, his assistant gunner was non-existant, he humped all the ammo himself, disregarded the bi-pod first thing, and never carried his issue pistol.
NRA Life Member
Big Sister: "You should be sponsored by Allen"
Me: "If you can't shoot good, at least look good walking to the firing line."
Big Sister: "Can you not afford a Pelican? Then buy an Allen gun bag."