The 4th Battalion, 320th Field Artillery Regiment (4-320th FAR) is an inactive field artillery battalion of the United States Army. The battalion has been assigned to the 82nd Airborne Division, 11th Airborne Division and 101st Airborne Division. The battalion has participated in World War I, World War II, Operation Just Cause, Operation Iraqi Freedom, and Operation Enduring Freedom. The battalion inactivated in 2014 as part of ongoing force reductions
