1ST ARMORED GROUP
Headquarters and Headquarters Company, 1st Armored Group activated 20 March 1943.
Redesignated 20 November 1943 as Headquarters and Headquarters Company, 17th Armored Group.
1ST ARMORED GROUP
Headquarters and Headquarters Company, 1st Tank Group activated 11 February 1941.
Redesignated 19 March 1944 as Headquarters and Headquarters Company, 1st Armored Group.
Inactivated 20 September 1945.
Campaigns: Naples-Foggia, Rome-Arno, Rhineland, Ardennes-Alsace, Central Europe.
2ND ARMORED GROUP
Headquarters and Headquarters Company, 2nd Armored Group activated 28 March 1943.
Redesignated 30 November 1943 as Headquarters and Headquarters Company, 18th Armored Group.
2ND ARMORED GROUP
Headquarters and Headquarters Company, 1st Tank Group activated 1 March 1942.
Redesignated 19 March 1944 as Headquarters and Headquarters Company, 2nd Armored Group.
Converted and redesignated 19December 1944 as Headquarters and Headquarters Company, 473rd Infantry Regiment.
Campaigns: Naples-Foggia, Rome-Arno, North Apennines.
3RD ARMORED GROUP
Headquarters and Headquarters Company, 3rd Armored Group activated 31 March 1943.
Redesignated 14 September 1943 as Headquarters and Headquarters Company, 1th Tank Group.
3RD ARMORED GROUP
Headquarters and Headquarters Company, 3rd Tank Group activated 1 March 1942.
Redesignated 4 January 1944 as Headquarters and Headquarters Company, 3rd Armored Group.
Inactivated 30 September 1945.
Campaigns: Normandy, Northern France, Rhineland, Ardennes Alsace, Central Europe.
4TH ARMORED GROUP
Headquarters and Headquarters Company, 4th Tank Group activated 2 April 1942.
Redesignated 25 November 1943 as Headquarters and Headquarters Company, 4th Armored Group.
Inactivated 16 January 1946.
Campaigns: Pacific Theater without inscription.
5TH ARMORED GROUP
Headquarters and Headquarters Company, 5th Tank Group activated 20 May 1942.
Redesignated 22 November 1943 as Headquarters ad Headquarters Company, 5th Armored Group.
Inactivated 1 November 1944.
Campaigns: None.
6TH ARMORED GROUP
Headquarters and Headquarters Company, 6th Tank Group, activated 23 April 1942.
Redesignated 1 February 1944 as Headquarters and Headquarters Company, 6th Armored Group.
Inactivated 22 October 1945.
Campaigns: Normandy, Northern France, Rhineland, Ardennes-Alsace, Central Europe.
7TH ARMORED GROUP
Headquarters and Headquarters Company, 7th Tank Group activated 2 July 1942.
Redesignated 15 December 1943 as Headquarters and Headquarters Company, 7th Armored Group.
Inactivated 26 November 1945.
Campaigns: Normandy, Northern France, Rhineland, Central Europe.
8TH ARMORED GROUP
Headquarters and Headquarters Company, 8th Tank Group activated 10 August 1942.
Redesignated 2 December 1943 as Headquarters and Headquarters Company, 8th Armored Group.
Inactivated 26 November 1945.
Campaigns: Northern France, Ardennes-Alsace, Central Europe.
9TH ARMORED GROUP
Headquarters and Headquarters Company, 9th Tank Group activated 10 September 1942.
Redesignated 8 December 1943 as Headquarters and Headquarters Company, 9th Armored Group.
Inactivated 24 October 1945.
Campaigns: Rhineland, Ardennes-Alsace, Central Europe.
10TH ARMORED GROUP
Headquarters and Headquarters Company, 10th Tank Group activated 1 March 1943.
Redesignated 9 December 1943 as Headquarters and Headquarters Company, 10th Armored Group.
Inactivated 1 May 1946.
Campaigns: Normandy, Northern France, Rhineland, Ardennes-Alsace, Central Europe.
11TH ARMORED GROUP
Headquarters and Headquarters Company, 11th Tank Group activated 28 July 1943.
Redesignated 5 December 1943 as Headquarters and Headquarters Company, 11th Armored Group.
Inactivated 1 May 1946.
Campaigns: Normandy, Northern France, Rhineland, Ardennes-Alsace, Central Europe.
12TH ARMORED GROUP
Headquarters and Headquarters Company, 3rd Armored Group redesignated 14 September 1943 as Headquarters and Headquarters Company, 12th Tank Group.
Redesignated 13 December 1943 as Headquarters and Headquarters Company, 12th Armored Group.
Inactivated 20 October 1945.
Campaigns: Rhineland, Ardennes-Alsace, Central Europe.
13TH ARMORED GROUP
Headquarters and Headquarters Company 13th Armored Group activated 1 November 1943.
Inactivated 12 January 1946.
Campaigns: Luzon.
14TH ARMORED GROUP
Headquarters and Headquarters Company, 14th Armored Group activated 28 October 1943.
Inactivated 10 March 1945.
Campaigns: None.
15TH ARMORED GROUP
Headquarters and Headquarters Company, 15th Armored Group activated 28 October 1943.
Inactivated 23 February 1946.
Campaigns: None.
16TH ARMORED GROUP
Headquarters and Headquarters Company, 16th Armored Group activated 8 November 1943.
Inactivated 11 September 1944.
Campaigns: None.
17th ARMORED GROUP
Headquarters and Headquarters Company, 1st Armored Group redesignated 20 November 1943 as Headquarters and Headquarters Company, 17th Armored Group.
Inactivated 30 April 1946.
Campaigns: Northern France, Rhineland, Ardennes-Alsace, Central Europe.
18TH ARMORED GROUP
Headquarters and Headquarters Company, 2nd Armored Group redesignated 30 November 1943 as Headquarters and Headquarters Company, 18th Armored Group.
Inactivated27 November 1945.
Campaigns: None.
19TH ARMORED GROUP
Headquarters and Headquarters Company, 19th Armored Group activated 24 August 1944.
Inactivated 10 April 1945.
Campaigns: Pacific Theater without inscription.
20TH ARMORED GROUP
Headquarters and Headquarters Company, 20th Armored Group activated 28 August 1944.
Inactivated 8 June 1946.
Campaigns: Leyte, Ryukyus.
