3. It saw action in almost every war until Vietnam
It was on the beaches of Normandy in WWII, the jungles of Cambodia during the Vietnam War, and even helped us sort things out in Korea in between. Yet, it was absent from the very war for which it was invented—WWI.
4. It completely changed the way our soldiers fought
The first ever “submachine gun,” the Thompson was invented to be small, lightweight, and deadly. It replaced the slower bolt-action rifles our soldiers had previously carried. Until the Thompson came along, a soldier’s best friend in close quarters was his bayonet.