Constituted 4 July 1918 as Headquarters, First Army
Organized 10 August 1918 at La Ferte-sous-Jouarre, France.
Inactivated 20 April 1919 at Marseille, France.
Redesignated 15 August 1927 as Headquarters, Seventh Army.
Redesignated 1927 as Headquarters, First Army.
Activated 1 October 1933 with headquarters at Governor's Island, New York.
Lieutenant General Omar N. Bradley - Assumed command March 1944
Lieutenant General Courtney H. Hodges - Assumed command August 1944
Normandy (with Arrowhead), Northern France, Rhineland, Ardennes-Alsace, Central Europe