The rocket launchers category includes shoulder-fired missile weapons, any weapon that fires a rocket-propelled projectile at a target yet is small enough to be carried by a single person and fired while held on one's shoulder. Depending on the country or region, people might use the terms "bazooka" or "RPG" as generalized terms to refer to such weapons, both of which are in fact specific types of rocket launchers. The bazooka is an American anti-tank weapon which was in service in 1942–1957, while the RPG is a Soviet anti-tank weapon.