Constituted 1 April 1942 as the 8th Armored Division and activated at Fort Knox, Kentucky.
Inactivated 13 November 1945 at Camp Patrick Henry, Virginia.
Major General John M. Devine - Assumed command October 1944
Headquarters and Headquarters Company, 8th Armored Division
88th Cavalry Reconnaissance Squadron
53rd Armored Engineer Battalion
Headquarters and Headquarters Company, Combat Command A, 8th Armored Division
Headquarters and Headquarters Company, Combat Command B, 8th Armored Division
Headquarters, Reserve Command, 8th Armored Division
18th Tank Battalion
36th Tank Battalion
80th Tank Battalion
7th Armored Infantry Battalion
49th Armored Infantry Battalion
58th Armored Infantry Battalion
Headquarters and Headquarters Battery, Division Artillery
398th Armored Field Artillery Battalion
399th Armored Field Artillery Battalion
405th Armored Field Artillery Battalion
Headquarters and Headquarters Company, Division Trains
78th Armored Medical Battalion
130th Armored Ordnance Battalion
148th Armored Signal Company
Rhineland, Ardennes-Alsace, Central Europe