Through various configurations in 1944 and 1945, the Twelfth US Army Group controlled the majority of American forces on the Western Front.

After the breakout from the beach-head at Normandy, the Twelfth Army Group formed the center of the Allied forces on the Western Front.

As the Twelfth advanced through Germany in 1945, it grew to control four United States field armies: the First, the Third, the Ninth and the Fifteenth.

[3] Twelfth Army Group was inactivated on 12 July 1945 upon Bradley's departure to become Director of the Veterans Administration.

Source: Bradley, Omar, A Soldier's Story, New York: Henry Holt and Company (1950), pp.