Formations of the United States Army during World War I

This is a list of formations in the United States Army during World War I. Many of these formations still exist today, though many by different designations.

See also: Formations of the United States Army

Field Armies

• First United States Army
• Second United States Army
• Third United States Army

Army Corps

Ambulance corps

• U.S. Ambulance Corps

Motor transport Corps

• The Motor Transport Corps of the United States Army during World War 1

Army corps

• I Corps
• II Corps
• III Corps
• IV Corps
• V Corps
• VI Corps
• VII Corps
• VIII Corps
• IX Corps

Tank corps

• United States Tank Corps

Signal Corps

• List of American Aero Squadrons
• List of American Balloon Squadrons

Divisions

Cavalry Divisions

• 15th Cavalry Division

Infantry Divisions

• 1st Division ("The Big Red One")
• 2nd Division ("Indian Head Division"; "Warrior Division")
• 3rd Division ("Rock of the Marne")
• 4th Division ("Ivy Division")
• 5th Division ("Red Devils"; "Red Diamond")
• 6th Division ("Red Star")
• 7th Division ("Bayonet Division"; "Lightfighters")
• 8th Division ("Golden Arrow Division"; "Pathfinder Division")
• 9th Division ("Old Reliables"; "Hitler's Nemesis")
• 10th Division
• 11th Division
• 12th Division
• 13th Division ("Lucky 13th")
• 14th Division
• 15th Division
• 16th Division
• 17th Division
• 18th Division
• 19th Division
• 20th Division
• 26th Division
• 27th Division
• 28th Division
• 29th Division
• 30th Division
• 31st Division
• 32nd Division
• 33rd Division
• 34th Division
• 35th Division
• 36th Division
• 37th Division
• 38th Division
• 40th Division
• 41st Division
• 42nd Division ("Rainbow Division")
• 76th Division ("Liberty Bell Division"; "Onaway Division")
• 77th Division ("Statue of Liberty Division")
• 78th Division ("Lightning Division")
• 79th Division ("Cross of Lorraine Division")
• 80th Division ("Blue Ridge Division")
• 81st Division ("Wildcat Division")
• 82nd Division ("All-Americans")
• 83rd Division ("Thunderbolt Division"; "Ohio Division")
• 84th Division ("Railsplitters")
• 85th Division ("Custer Division")
• 86th Division ("Blackhawk Division")
• 87th Division ("Golden Acorn Division")
• 88th Division ( Fighting Blue Devils"; "Clover Leaf Division")
• 89th Division ("Rolling W")
• 90th Division ("Tough 'Ombres")
• 91st Division ("Pine Tree Division"; "Wild West Division")
• 92nd Division (Colored) ("Buffalo Soldiers")
• 93d Division (Colored) ("Blue Helmets")
• 95th Division
• 96th Division
• 97th Division
• 98th Division
• 99th Division
• 100th Division
• 101st Division
• 102nd Division