The following is a list of units of the United States Army during the Vietnam War.
Active Duty Divisions and Brigades in Theater
editAirMobile Divisions
editInfantry Divisions
edit- 1st Infantry Division
- 4th Infantry Division
- 9th Infantry Division
- 23rd Infantry Division
- 25th Infantry Division
Independent Brigades
edit- 1st Brigade, 5th Infantry Division
- 1st Aviation Brigade
- 1st Signal Brigade
- 3rd Brigade, 82nd Airborne Division
- 11th Armored Cavalry Regiment
- 11th Infantry Brigade
- 18th Military Police Brigade
- 44th Medical Brigade
- 173rd Airborne Brigade
- 196th Infantry Brigade
- 198th Infantry Brigade
- 199th Infantry Brigade
- 18th Engineer Brigade (combat)
- 20th Engineer Brigade
- 223rd Aviation Brigade