The 502nd Infantry Regiment (502nd IR), previously titled the 502nd Parachute Infantry Regiment (502nd PIR), is an infantry regiment of the United States Army. The regiment was established shortly after the American entry into World War II, and was assigned as a regiment of the 101st Airborne Division, "The Screaming Eagles", one of the most decorated formations of the U.S. Army. The regiment saw substantial action in the European Theater of World War II and was inactivated in 1945, shortly after the end of the war. Reactivating in a new form in 1956, the 502d Infantry has served in the Vietnam War, the first Gulf War, Operation Iraqi Freedom, Operation Enduring Freedom in Afghanistan, and Operation Inherent Resolve in Iraq. Since 1974, the regiment has been classified as an Air Assault unit. Currently, its 1st and 2nd battalions are active. Both battalions are assigned to the 2nd Brigade Combat Team, 101st Airborne Division (Air Assault).