Order of Battle


101st Airborne Division, 101st Air Cavalry Division,
101st Airborne Division (Airmobile)

This list was compiled by History buff, Tony Mabb.
The following list is not all inclusive.

1st Brigade (Separate) 29 July 65 18 Nov 67

Headquarters & Headquarters Company, 1st Brigade, 101st Airborne Division 29 Jul 65 - 19 Jan 72

1/327th Infantry (Airborne) Departed 20 Jan 72
2/327th Infantry (Airborne) Departed 21 April 72 (Briefly assigned to 1st Cav)
2/502nd Infantry (Airborne) Departed 19 Jan 72
Long Range Reconnaissance Patrol (Provisional) Dec 65 - Aug 67

2/320th Artillery (Airborne) Departed 9 Dec 71
5th Battalion 27th Artillery, OPCON to 1st Brigade (Seperate) Nov 65 - Jun 67
Troop A, 2/17th Cavalry (Airborne)(OPCON to Tiger Force 327th Infantry)(aka; 4th Provisional Rifle Company while assigned to 1st Bde Sep) July 65 - Feb 72
101st Support Battalion (Provisional) Departed 19 Dec 67
Support Battalion (Airborne)(Provisional)Jul 65 - Nov 67
A Co 101st Administration Company Jul 65 - 17 Jan 72
B Co 801st Maintenance Battalion
C Co 501st Supply Battalion
E Co Provisional
101st Replacemant Company
A Co 326 Engineer Battalion (Airborne)(aka; 5th Provisional Rifle Company while assigned 1st Bde Sep) Departed 17 Jan 72
D Co 326th Medical Battalion (Airborne) Departed 23 Dec 67
B Co 501st Signal Battalion (Airborne) Departed 12 Jan 72
20th Chemical Detachment
181st Military Intellignece Detachment
Detachment 3, 3rd Radio Research Unit (406th ASA Det) Nov 65 - Jul 66
406th Army Security Agency Detachment (406th Radio Research Det) deactivated 20 Nov,1968
7th Radio Research Unit (redisignated 101st Radio Research Company Sep 66)

Division composition as of 19 Nov, 67
(most units arrived mid Dec 67 during Operation Eagle Thrust)


Headquarters & Headquarters Company, 101st Airborne Division 19 Nov 67 - 10 Mar 72
Headquarters & Headquarters Company, 2nd Brigade, 101st Airborne Division 18 Nov 67 - 14 Feb 72
Headquarters & Headquarters Company, 3rd Brigade, 101st Airborne Division 18 Nov 67 - 21 Dec 71
Headquarters & Headquarters Company, and Band, 101st Airborne Division Support Command 18 Nov 67 - 17 Jan 72
Headquarters & Headquarters Battery, 101st Airborne Division Artillery 18 Nov 67 - 17 Jan 72
101st Military Police Company Nov 67 - Dec 71

3/187th Infantry (Airborne) Departed 10 Dec 71
1/501st Infantry (Airborne) Departed 4 Feb 72
2/501st Infantry (Airborne) Departed 1 July 72 (Briefly assigned to US Army Support Command)
1/502nd Infantry (Airborne) Departed 8 Feb 72
1/506th Infantry (Airborne) Departed 21 Dec 71
2/506th Infantry (Airborne) Departed 14 Dec 71
3/506th Infantry (Airborne) 23 Oct 67 - 15 May 71
L Company, 75th Rangers 1 Feb 69 - 20 Dec 71 (assets from F Co 58th Inf)

Co F 58th Infantry (LRP) 10 Jan 68 - 1 Feb 69
2nd Squadron 17th Cavalry, Troops, HHT, A-C, D & F Dec 67 - 8 Feb 72 (except A Troop)

42nd Infantry Platoon (Scout Dog) Set 66 - 26 Dec 71
47th Infantry Platoon (Scout Dog) 27 May 68 - 21 Jul 71
58th Infantry Platoon (Scout Dog) 17 Feb 68 - 1 Oct 71
557th Infantry Platoon (Combat Tracker) 15 Feb 68 - 21 Jul 71

101st Aviation Group 25, Jun 69 - 19 Jan 72
101st Aviation Battalion (Airmobile) Departed 5 Feb 72 (Co A-B Dec 67, Co C-D Dec 68)
158th Aviation Battalion (Assault Helicopter) Co A-D, 23 Feb 69 - 24 Dec 71
159th Aviation Battalion (Assault Helicopter) Co A-C, 1 Jul 68 - Feb 72
163rd Aviation Co (General Support) 1 Jul 68 - 18 Jan 72
188th Assault Helicopter Company (7 Jul 68 changed to C 101 Avn Bn)
478th Aviation Co (Heavy Helicopter) 15 Sep 65 - 12 Oct 72 (not all inclusive with the 101st)

2nd Battalion 11th Artillery (155) 10 Jun 68 - 1 Jan 72 (time with 101st in Vietnam since Dec 66)
1st Battalion 39th Artillery (155)* 10 Oct 69 - 21 Dec 71 (under operational control of 101st and XXIV Corps)*Kentucky National Guard

4th Battalion 77th Artillery (Aerial Rocket) 17 Oct 68 - 4 Jan 72
2nd Battalion 319th Artillery (105) Departed 20 Dec 71
2nd Battalion 320th Artillery (105) Departed 16 Feb 72
1st Battalion 321st Artillery (105) Departed 16 Feb 72
Battery A, 377th Artillery (Aviation) Departed 12 Jan 72

101st Transportation Company (Provisional), March 1968 - ?
5th Transportation Battalion Jul 68 - 18 Jan 72
326th Medical Battalion, Co A-D Departed 23 Dec 71
326th Engineer Battalion, Co A-D Departed 23 Dec 71
426th Supply and Service Battalion 1 Jul 68 - 30 Jan 72
501st Signal Battalion Departed 12 Jan 72
801st Maintenance Battalion Departed 30 Jan 72
101st Radio Research Co (USASA Security Company) 10 Sep 66 - 1 Apr 72
265th Radio Research Co (Airborne), Nov 67 - Apr 72
10th Chemical Platoon
20th Chemical Detachment
36th Chemical Detachment
22nd Military History Detachment
101st Military Intelligence Co Departed 17 Jan 72
25th Public Information Detachment
34th Public Information Detachment
45th Public Information Detachment
101st MP Co 28 Dec - 16 Jan 72

Units on Temporary Assignment:

3rd Squadron, 5th Cavalry (Armored) Sep 69 - Jan 70 and Jul 71 - 8 Nov 71 (except D Troop Feb 72)
D Troop, 1st Squad, 1st Calvary Regiment (attached to 2/17 Cav) Jul 68 - Mar 69
221st Medical Detachment (aka:"Leg Medics"), 44th Medical Brigade, 1st Bde, Aug 66 to Apr 67
39th Transportation Battalion, 1st Logistical Support Command, Camp Eagle 69-72
27th Combat Engineer Battalion, 45th Engineer Group 70-72

For updates to unit designation, movement dates or unit additions
Email: NamVet101@hotmail.com
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Subject: Battle Order