First Army (United States)
| First Army | |
|---|---|
| Shoulder sleeve insignia and combat service identification badge of the First United States Army. | |
| Active | 1918–1919 1933–present | 
| Country | United States | 
| Branch | United States Army | 
| Type | Security operations | 
| Role | Training support | 
| Size | Theater Army | 
| Part of | United States Army Forces Command | 
| Garrison/HQ | Rock Island Arsenal Rock Island County, Illinois, U.S. | 
| Nickname(s) | Doughboys | 
| Motto(s) | First in Deed | 
| Anniversaries | 10 August 1918 | 
| Engagements | World War I World War II | 
| Website | first.army.mil | 
| Commanders | |
| Commanding General | LTG Mark H. Landes | 
| Deputy Commanding General (Operations) | MG Mark D. McCormack | 
| Deputy Commanding General (Support) | MG Timothy E. Brennan | 
| Command Sergeant Major | CSM Christopher A. Prosser | 
| Notable commanders | John J. Pershing Omar Bradley Courtney Hodges Russel L. Honoré | 
| Insignia | |
| Distinctive unit insignia | |
| Flag | |
First Army is the largest OC/T organization in the U.S. Army, comprising two divisions, ten brigades, and more than 7,500 Soldiers. Its mission is to partner with the U.S. Army National Guard and U.S. Army Reserve to enable leaders and deliver trained and ready units for Combatant Commands. On order, First Army executes large-scale mobilization and unit [re]constitution to build America’s Army for combat. First Army achieves this through four lines of effort: Develop the Profession; Deliver Combat Ready Forces; Enable Reserve Component Warfighters; and Transformation for the Total Army of 2040.