First United States Army
First Army was established on 10 August 1918 as a field army when sufficient American military manpower had arrived in France during World War I. The large number of troops assigned to the American Expeditionary Forces (AEF) required the activation of subordinate commands. To fill this need, First Army was the first of three field armies established under the AEF. The first commander was General John J. Pershing. The headquarters planned and directed the first major American offensive, the St Mihiel Offensive (September 12 to 16, 1918). First Army was inactivated on April 20th, 1919.
Composition
Structure
The First US Army was created as a field arm of the American Expeditionary Force once enough troops had arrived in France. It was under the direct command of General John J. "Black Jack" Pershing.
Type
Infantry
Founding
August 10, 1918
Dissolution
April 20, 1919
Overall training Level
Trained
Assumed Veterancy
Veteran
Used by
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