Joe Bazooka was a comic in the 1920/1930's and bazooka gum used to (for all i know still does) have small comic stripe 'jokes' in the wax paper that wraped the penny gum.(2 for a penny if you're old enough)

at the start of WWII, Joe Bazooka hung up his boxing gloves, and become a fighting hero (well first he went to boot camp, (and was the camp boxing champion, and beloved by all his fellow soldiers).

i think the there is some connections between the comic boxing champ the light weight anti tank gun (the gun connections is well established)

(for years Joe Bazooka had a large prominent place in NYC comics. The Daily News carried the strip) You might be able to find more info about the comic, -several books have included Joe Bazooka in collections or early comics.