Formations of the United States Army

This is a list of historical formations of the United States Army. Units still in existence are in bold.

For specific eras:

Army groups

Field armies

Army corps

Airborne, armored, and infantry are grouped separately. The numbering system for the airborne corps is a continuation of the infantry numbering system.

Airborne corps

Armored corps

Army corps

Army divisions

Air assault divisions

Airborne divisions

Armored divisions

Cavalry divisions

Infantry divisions

Light divisions

Mountain divisions

Reserve training divisions

See also