101st Airmobile Division (Airmobile) Order of Battle during the Vietnam War

Infantry Battalions

• 3rd Battalion, 187th Infantry Regiment (Airmobile)
• 1st Battalion, 327th Infantry Regiment (Airmobile)
• 2nd Battalion, 327th Infantry Regiment (Airmobile)
• 1st Battalion, 501st Infantry Regiment (Airmobile)
• 2nd Battalion, 501st Infantry Regiment (Airmobile)
• 1st Battalion, 502nd Infantry Regiment (Airmobile)
• 2nd Battalion, 502nd Infantry Regiment (Airmobile)
• 1st Battalion, 506th Infantry Regiment (Airmobile)
• 2nd Battalion, 506th Infantry Regiment (Airmobile)
• 3rd Battalion, 506th Infantry Regiment (Airmobile)

Division Artillery

• 2nd Battalion, 11th Artillery Regiment (155mm)
• 1st Battalion, 39th Artillery Regiment (155mm)
• 4th Battalion, 77th Artillery Regiment (Aerial Rocket)
• 2nd Battalion, 319th Artillery Regiment (105mm)
• 2nd Battalion, 320th Artillery Regiment (105mm)
• 1st Battalion, 321st Artillery Regiment (105mm)
• Battery A, 377th Artillery Regiment (Aviation)

Aviation Units
101st Aviation Group

• 101st Aviation Battalion (Airmobile)
• 158th Aviation Battalion (Assault Helicopter)
• 159th Aviation Battalion (Assault Helicopter)
• 163rd Aviation Company (General Support)
• 478th Aviation Company (Heavy Support Helicopter)

Division Reconnaissance

• 2nd Squadron, 17th Cavalry Regiment (Armored/ later converted to Air)
• Company F, 58th Infantry (Long Range Recon)
• Company L, 75th Infantry (Ranger)

Division Support Units

• 326th Engineer Battalion
• 5th Transportation Battalion (Aircraft Maintenance)
• 326th Medical Battalion
• 426th Supply & Service Battalion
• 501st Signal Battalion
• 101st Administrative Company
• 801th Maintenance Battalion
• 4th Military Police Company
• 265th Army Security Agency Company
• 101st Military Intelligence Company
• 10th Chemical Platoon
• 20th Chemical Detachment
• 36th Chemical Detachment
• 22nd Military History Detachment
• 25th Public Information Detachment
• 34th Public Information Detachment
• 45th Public Information Detachment

Temporarily Assigned

• 1st Squadron, 1st Armored Cavalry Regiment (Armored)
• 3rd Squadron, 5th Armored Cavalry Regiment (Armored)
• 11th Infantry Brigade

Primary Sources:
"Vietnam Order of Battle" by Shelby L. Stanton
http://en.wikipedia.org/wiki/101st_Airborne_Division (http://en.wikipedia.org/wiki/101st_Airborne_Division)
http://www.angelfire.com/rebellion/101abndivvietvets/page15history101.html (http://www.angelfire.com/rebellion/101abndivvietvets/page15history101.html)
http://www.screamingeagle326.com/index2.htm (http://www.screamingeagle326.com/index2.htm)

Good Hunting.

MR