First Army (United States)

First Army
Active1918–1919
1933–present
Country United States
Branch United States Army
TypeSecurity operations
RoleTraining support
SizeTheater Army
Part ofUnited States Army Forces Command
Garrison/HQRock Island Arsenal
Rock Island County, Illinois, U.S.
Nickname(s)Doughboys
Motto(s)First in Deed
Anniversaries10 August 1918
EngagementsWorld War I
World War II
Websitefirst.army.mil
Commanders
Commanding GeneralLTG Mark H. Landes
Deputy Commanding General (Operations)MG Mark D. McCormack
Deputy Commanding General (Support)MG Timothy E. Brennan
Command Sergeant MajorCSM 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.