1st Infantry Division Order of Battle during the Vietnam War



Infantry Battalions

• 1st Battalion, 2nd Infantry Regiment
• 2nd Battalion, 2nd Infantry Regiment (Mechanized)
• 1st Battalion, 16th Infantry Regiment (Mechanized)
• 1st Battalion, 16th Infantry Regiment
• 1st Battalion, 18th Infantry Regiment
• 2nd Battalion, 18th Infantry Regiment
• 1st Battalion, 26th Infantry Regiment
• 1st Battalion, 28th Infantry Regiment
• 2nd Battalion, 28th Infantry Regiment

Division Artillery

• 1st Battalion, 5th Artillery Regiment (105mm)
• 8th Battalion, 6th Artillery Regiment (155mm)
• 1st Battalion, 7th Artillery Regiment (105mm)
• 6th Battalion, 15th Artillery Regiment (105mm)
• 2nd Battalion, 33rd Artillery Regiment (105mm)
• Battery D, 25th Artillery (Target Acquisition)

Aviation Units

• 1st Aviation Battalion (Airmobile)
• 162nd Aviation Company (Airmobile)
• 173rd Aviation Company (Airmobile)
• Troop C, 16th Cavalry (Air)

Division Reconnaissance

• 1st Squad, 4th Cavalry Regiment (Armored)
• 11th Pathfinder Company (Provisional)
• Company F, 52nd Infantry (Long Range Recon)
• Company I, 75th Infantry (Ranger)

Division Support Units

• 1st Engineer Battalion
• 1st Medical Battalion
• 1st Supply & Service Battalion
• 121st Signal Battalion
• 1st Administrative Company
• 701st Maintenance Battalion
• 1st Military Police Company
• 327th Army Security Agency Company
• 242nd Chemical Detachment
• 266th Chemical Platoon
• 17th Military History Detachment
• 1st Military Intelligence Company
• 43rd Public Information Detachment
• 44th Public Information Detachment

Temporarily Assigned

• 3rd Squadron, 11th Armored Cavalry Regiment
• 5th Battalion, 60th Infantry Regiment (Mechanized)

Primary Sources:
"Vietnam Order of Battle" by Shelby L. Stanton
http://www.fortunecity.com/westwood/vuitton/72/brov2.html (http://www.fortunecity.com/westwood/vuitton/72/brov2.html)
http://www.angelfire.com/md/brov/ (http://www.angelfire.com/md/brov/)
http://en.wikipedia.org/wiki/1st_Infantry_Division_%28United_States%29 (http://en.wikipedia.org/wiki/1st_Infantry_Division_%28United_States%29)

Good Hunting.

MR