WHAT WAR was the Thompson mACHINE GUN USED?

The Thompson submachine gun, often referred to as the "Tommy Gun," was widely used during World War II. It was favored by American troops for its rapid-fire capability and .45 caliber ammunition. Additionally, it gained notoriety during the Prohibition era in the United States, where it was utilized by both law enforcement and criminals. The Thompson also saw action in various conflicts post-World War II, including the Korean War.