For one, they both used the M1A1 "paratrooper" carbine during the war. One of the most interesting U.S. military small arms of World War II is the M1A1 “paratrooper“ carbine.

Marines' M1A1 Abrams tanks are about to get even more awesome. The improvements to 400 tanks will include a button that will allow the tank commander to move the main gun on a target being tracked ...