Formations of the United States Army during the Vietnam War

The following is a list of divisions of the United States Army during the Vietnam War.

Active Duty Divisions and Brigades in Theater

AirMobile Divisions

• 1st Cavalry Division
• 101st Airborne Division

Infantry Divisions

• 1st Infantry Division
• 4th Infantry Division
• 9th Infantry Division
• 23rd Infantry Division
• 25th Infantry Division

Independent Brigades

• 1st Brigade, 5th Infantry Division
• 3rd Brigade, 82nd Airborne Division
• 11th Armored Cavalry Regiment
• 11th Infantry Brigade
• 173rd Airborne Brigade
• 196th Infantry Brigade
• 198th Infantry Brigade
• 199th Infantry Brigade
• 18th Engineer Brigade (combat)
• 20th Engineer Brigade
• 223rd Aviation Brigade

Active Duty Divisions not in Theater

Armored Divisions

• 1st Armored Division
• 2nd Armored Division
• 3rd Armored Division
• 4th Armored Division

Infantry Divisions

• 2nd Infantry Division
• 3rd Infantry Division
• 7th Infantry Division
• 8th Infantry Division
• 24th Infantry Division
• 10th Mountain Division

National Guard Divisions

Armored Divisions

• 30th Armored Division
• 50th Armored Division

Infantry Divisions

• 26th Infantry Division
• 28th Infantry Division
• 30th Infantry Division
• 38th Infantry Division
• 40th Infantry Division
• 42nd Infantry Division
• 47th Infantry Division
• 49th Infantry Division

1. List of formations of the United States Army
2. United States in the Vietnam War
3. List of current formations of the United States Army
4. Vietnam War
5. United States Army Vietnam
6. List of formations of the United States Army during World War II
7. United States Army
8. Outline of the Vietnam War
9. People's Army of Vietnam
10. Military Assistance Command, Vietnam – Studies and Observations Group
11. Army of the Republic of Vietnam
12. United States Army Rangers
13. 25th Infantry Division (United States)
14. Structure of the United States Army
15. 1st Cavalry Division (United States)
16. 5th Special Forces Group (United States)
17. United States Army Special Forces
18. 1st Infantry Division (United States)
19. Tanks of the United States
20. First Army (United States)