USARSUPTHAI ASSOCIATION

"Mia Pen Rai Cop"

Vietnam Order of Battle © - Shelby L. Stanton

Appendix B: The US Army in Thailand During the Vietnam Conflict

"The United State Army build-up in Thailand can be traced to the establishment of the U. S. Military Assistance Command, Thailand on 15 May 1962. Early that year a combined U.S. task force was deployed to Thailand on a military exercise which included a Marine Battalion Landing Team (BLT), the 1st Battle Group. 27th Infantry* [25th Infantry Division] and supporting elements under a detachment of the 9th Logistical Command. They were joined by a army aviation company composed of Caribou aircraft on 10 July 1962. In late August the 1st Battle Group, 35th Infantry* [25th Infantry Division] replaced the 1st Battle Group, 27th Infantry. However, this task force was withdrawn November 1962 after the situation in Laos stabilized. In the meantime, several U.S. Army units had been sent to Thailand on a permanent basis and by November 1966 the U.S. Army Support Command, Thailand, was established." These Army units fulfilled direct or indirect support functions related to the Vietnam conflict to the extent that most received Vietnam service credit in recognition of their supporting role.

*These battle groups were redesignated battalions by Dept. of the Army as follows:

1st Battle Group, 27th Infantry 8/26/63

1st Battle Group, 35th Infantry 8/12/63

*MAJOR U.S. ARMY COMMANDS IN THAILAND:

*Deputy Chief, Joint U.S. Military Assistance Group

*Joint U.S. Military Advisory Group, Thailand

*Joint U.S. Military Advisory Group, Thailand, Support Group Provisional

*Joint U.S. Military Advisory Group, Thailand, Support Group A

*U.S. Army Bangkok Area Command, Provisional

*U.S. Army Depot, Thailand, Provisional [later 501st Field Depot]

*U.S. Army Sattahip Area Command, Provisional

*U.S. Army Special Troops, Bangkok

*U.S. Army Special Troops, Korat

*U.S. Army Special Troops, Sattahip

*U.S. Army Support Command, Thailand

KORAT:

256th AG Co. Personnel Service 12/28/67 - 6/28/71

44th EN Group, HHD Construction 12/62 - 1/1/70

538th EN Bn. Construction 7/14/65 - 6/15/70

593rd EN Co. Construction 6/6/63 - 8/1/63

697th EN Co. Pipeline Construction Support 8/29/65 - 12/1/69

738th En Co. Supply Point 3/2/63 - 7/15/65

9th Logistical Command HHD Logistics Support 4/63 - 6/12/70

7th MAINT Bn. Direct Support 7/15/65 - 6/25/71

57th MAINT Co. Direct Support 4/1/63 - 2/20/71

*Previously Ordnance until 7/20/66

597th MAINT Co. Direct Support 5/9/66 - 9/1/69

133rd MED Group, HHD Medical Support 1/1/68 - 11/10/70

428th MED Bn., HHD Medical Support 6/1/66 - 1/1/68

21st MED Depot Medical Depot 3/15/67 - 5/15/70

31st MED Hospital Field Hospital 6/1/62 - 5/15/70

40th MP Bn. Military Police Support 3/18/67 - 12/30/70

13th MP Co. Separate 1/24/69 - 3/29/73

219 MP Co. Physical Security 11/20 66 - 6/25/71

41st ORD Co. Direct Ammunition Support 3/6/66 - 9/1/66

USASTRATCOM SIG Bn., Provisional- Long Lines Communications Unknown - 7/14/69

442nd SIG BN Support-Long Lines 11/6/67 - 6/30/71

55th SIG Co. Support 7/1/65 - 7/1/69

207th SIG Co. Tropospheric 4/15/63 - 7/1/69

331st Supply & Service Co. Forward Repair Parts 7/15/65 - 12/20/68

511th Supply & Service Co. General Support 1/5/67 - 12/20/68

558th Supply & Service Co. Heavy Material Support 7/15/65 - 12/20/68

*Previously Ordnance until 7/20/66

590th Supply & Service Co. Direct Support 9/30/63 - 12/20/68

*Previously Engineer until 9/1/66

291st TR Co. Medium Cargo Truck 2/28/67 - 2/20/71

501st U..S. Army Depot - Field Depot 3/18/67 - 12/20/68

SATTAHIP:

9th Logisical Command, HHD Logistics Support 4/63 - 6/12/70

562nd MAINT Co. Direct Light Support 1/13/67 - 6/25/71

281st MP Co. Security Guard 11/11/66 - 10/31/75

599th ORD Co. Ammunition Direct/ General Support 5/7/67 - 6/25/71

596th QM Co. Petroleum Depot 6/27/66 - 12/20/68

(305th Supply & Service Co. Direct Support 3/12/68 - 4/15/69)

379th SIG Bn., HHD Support 8/25/63 - 6/30/71

324th SIG Co. Tropospheric 6/12/71 - 1/1/72

499th TR Bn., HHD Terminal 10/25/66 - 12/20/68

53rd TR Co. Medium Truck 4/10/67 - 12/30/70

165th TR Co. Light Amphibious Vehicle (LARC) 4/26/67 - 11/1/68

229th TR Co. Terminal Service 4/30/67 - 12/20/68

233rd TR Co. Terminal Service 11/11/66 - 12/20/68

260th TR Co. Medium Petrol Truck 12/15/66 - 11/31/75

505th TR Co. Medium Truck 11/12/66 - 12/30/70

KANCHANABURI:

91st EN Co. Dump Truck 8/7/67 - 6/15/70

561st EN Co. Construction 8/10/63 - 6/15/70

556th MAINT Co. Direct Light Support 2/7/68 - 7/1/69

558th Supply & Service Bn. General Support 3/17/68 - 7/1/69

PHANOM SARAKAM:

809th EN Bn. Construction 3/24/62 - 2/3/71

SAKHON NAKHON:

16th EN Co. Dump Truck 8/2/67 - 2/20/71

54th EN Co. Construction Support 12/20/68 - 6/15/70

UBON:

USASTRATCOM SIG Bn. Long Lines Communications Unknown - 7/14/69

KHON KAEN:

569th TR Co. Medium Truck 12/1/67 - 4/1/70

BANGKOK:

5th MED Hospital Field Hospital 5/9/66 - 11/10/70

93rd Psychological Operations Co. Special Warfare 6/23/67 - 6/30/74

29th SIG Group, HHD Signal Support 9/12/66 - 6/30/71

Bangkok Signal Bn., Provisional-Support Unknown - 7/14/69

302nd SIG Bn., HHD Support 7/14/69 - 6/30/71

325th SIG Bn., HHD Support 7/14/69 - 12/31/70

167th SIG Co. Radio Relay VHF 5/62 - 5/6/63

334th SIG Co. Support 11/6/67 - 7/1/69

347th SIG Co. Support 11/6/67 - 7/1/69

313th TR Co. Medium Reefer Truck 11/24/66 - 3/31/72

*7th U.S. ASA Unit Field Station 5/15/62 - 6/30/71

*Includes the 83rd U.S. Army Security Agency Special Operations Unit

11th U.S. ASA Unit Special Reconnaissance 8/1/62 - 9/1/69

LOPBURI:

46th U.S. Army Special Forces Co 10/66 - 4/74

"In October 1966 Company D, 1st Special Forces Group [Airborne], 1st Special Forces, which was organized 15 April 1966 at Fort Bragg, arrived in Thailand. The 46th Special Forces Company, 1st Special Forces was activated 15 April 1967 in Thailand using assets of Company D, 1st Special Forces Group. In 1968 the 46th Special Forces Company was headquartered at Camp Pawai near Lopburi and had three subordinate B-Detachments at Sakon Nakhon, at Camp Nong Takoo (Pak Chong) and at Ban Kachon. On March 31 1972 its assets were used to form HHD, 3rd Battalion, 1st Special Forces Group [Airborne], 1st Special Forces. However for security reasons it was known locally simply as U.S. Army Special Forces, Thailand." Other A-Detachments were located for various periods during the war at: Camp Carrow (Trang), Chonburi, Kokethiem, Saraburi, Ratburi, Fort Narai (Lopburi), Kanchanaburi, Hua Hin, Bangkok, Udorn, Ubon, Nakhon Phanom, Mai Rem, Songkhia, Pranburi, Phitsanulok, Nam Phong. Chieng Kham, Ban Nong Saeng, Ban Haui Khu, Chiang Mai, Lamphun, Nan, Ban Haui Sai Tai, Muang Loi and Samae San.

Editorial Note

****I've gotten a number of responses from the information contained in Appendix B (above). This is a published book available (although hard to find) in bookstores. If your unit is NOT listed there, don't worry, YOU WERE STILL IN THAILAND, OK? I can't change the info in the book, so I'm working on this unit listing to show the units stationed in Thailand. (Some units maintained detachment elements at remote locations and not all of those locations are shown yet, so be patient). Feel free to send an email to Webmaster with Addition or Correction to Unit Listings in the subject line.

Listing of Thailand Based Army Units

This listing is NOT a complete listing, but one under construction:

Units listed in Appendix B = Yellow


105th SIGNAL DETACHMENT (SERVICES SUPPORT)

11th ARMY SECURITY AGENCY UNIT (SPECIAL RECONNIASSANCE) 1 Aug 62 - 1 Sep 69 (Bangkok)

125th SIGNAL BATTALION, 25th INF DIV (JTF 116)

128th MEDICAL BATTALION  (Korat)

133rd MEDICAL GROUP, HHD (MEDICAL SUPPORT) 1 Jan 68 - 10 Nov 70  (Korat)

138th TRANSPORTATION DETACHMENT (TTPO)  (Vayama)

13th MILITARY POLICE COMPANY (SEPARATE) 24 Jan 69 - 29 Mar 73  (Korat)

142nd ENGINEER COMPANY (Samae San)

145th ENGINEER COMPANY (Samae San)

162nd MEDICAL DETACHMENT  (Vayama)

165th MEDICAL DETACHMENT  (Vayama)

165th TRANSPORTATION COMPANY (LIGHT AMPHIBIUS VEHICLE - LARC) 26 Apr 67 - 1 Nov 68 (Sattahip)

167th SIGNAL COMPANY (RADIO RELAY VHF) May 62 - 6 May 63 (Bangkok)

16th ENGINEER COMPANY (DUMP TRUCK) 2 Aug 67 - 20 Feb 71 (Sakhon Nakhon)

16th INFANTRY (Samae San)

17th MILITARY INTELLIGENCE DETACHMENT (Bangkok)

172nd TRANSPORTATION DETACHMENT  (Friendship)

1st BATTALION, 35th INFANTRY, 25th INFANTRY DIVISION (JTF 116)

1st BATTLE GROUP, 27th INFANTRY (JTF 116)

1st BATTLE GROUP, 35th INFANTRY (JTF 116)

1st SPECIAL FORCES GROUP, 3rd BATTALION

1st SIGNAL BRIGADE

1st SIGNAL BATTALION

201st SIGNAL DETACHMENT (RB)

207th SIGNAL COMPANY (TROPOSPHERIC) 15 Apr 63 - 1 Jul 69 (Korat)

219th MILITARY POLICE COMPANY (PHYSICAL SECURITY) 20 Nov 66 - 25 Jun 71 (Korat)

21st MEDICAL DEPOT (MEDICAL DEPOT) 15 Mar 67 - 15 May 70 (Korat)

229th TRANSPORTATION COMPANY (TERMINAL SERVICE) 30 Apr 67 - 20 Dec 68 (Sattahip)

233rd TRANSPORTATION COMPANY (TERMINAL SERVICE) 11 Nov 66 - 20 Dec 68 (Sattahip)

234th  ENGINEER COMPANY (Vayama)

254th TRANSPORTATION DETACHMENT (Friendship)

256th AG CO (PERSONAL SERVICE) 28 Dec 67 - 25 June 71 (Korat)

258th TRANSPORTATION DETACHMENT (Friendship)

260th TRANSPORTATION COMPANY (PETROLEUM) 15 Dec 66 - 31 Oct 75 (Sattahip)

270th ORDINANCE DETACHMENT (Friendship)

281st MILITARY POLICE COMPANY (SECURITY GUARD) 11 Nov 66 - 31 Oct 75 (Sattahip)

28th SIGNAL COMPANY (Friendship)

291st TRANSPORTATION COMPANY (CARGO) 28 Feb 67 - 20 Feb 71 (Korat)

29th SIGNAL COMPANY

29th SIGNAL GROUP, HHD (SIGNAL SUPPORT) 12 Sep 66 - 30 Jun 71 (Bangkok)

302nd SIGNAL BATTALION, HHD (SUPPORT) 14 Jul 69 - 30 Jun 71 (Bangkok)

302nd SIGNAL COMPANY (Bangkok)

305th SUPPLY & SERVICE COMPANY (DIRECT SUPPORT) 12 Mar 66 - 15 Apr 69 (Kanchanaburi)

313th TRANSPORTATION COMPANY (REFER) 24 Nov 66 - 31 Mar 72 (Bangkok)

31st MED HOSP (FIELD HOSPITAL) 1 Jun 62 - 15 May 70  (Korat)

324th SIGNAL COMPANY (TROPO) 30 Jun 71 - 1 Feb 72 (Sattahip)

325th SIGNAL BATTALION, HHD (SUPPORT) 14 Jul 69 - 31 Dec 70 (Bangkok)

331st SUPPLY & SERVICE COMPANY (FORWARD REPAIR PARTS) 15 Jul 65 - 20 Dec 68 (Korat)

334th SIGNAL COMPANY (SUPPORT) 6 Nov 67 - 1 Jul 69 (Bangkok)

33rd TRANSPORTATION PLATOON (REFER) 10 May 67 - 1 Apr 70 (Korat)

347th SIGNAL  COMPANY (SUPPORT) 6 Nov 67 - 1 Jul 69 (Bangkok)

35th FINANCE & DISBURSING CO (Korat)

379th SIGNAL BATTALION, HHD (SUPPORT) 25 Aug 63 - 30 Jun 71 (Sattahip)

40th MILITARY POLICE BATTALION (MILITARY POLICE SUPPORT) 18 Mar 67 - 30 Dec 70  (Korat)

41st ORDNANCE COMPANY (DIRECT AMMUNITION SUPPORT) 6 Mar 66 - 1 Sep 66 (Korat)

428th MEDICAL BATTALION, HHD (MEDICAL SUPPORT) 1 Jun 66 - 1 Jan 68  (Korat)

442nd SIGNAL BATTALION (SUPPORT - LONG LINES) 6 Nov 67 - 30 Jun 71 (Korat)

449th TRANSPORTATION BATTALION (TERMINAL) 25 Oct 66 - 20 Dec 68 (Sattahip)

44th ENGINEER GROUP, HHD (CONSTRUCTION) May 62 - 1 Jan 70 (Korat)

46th SPECIAL FORCES COMPANY (SPECIAL WARFARE) Oct 66 - Apr 74 (Lopburi)

47th FINANCE & ACCOUNTING COMPANY

488th MEDICAL DETACHMENT

499th TRANSPORTATION BATTALION,  HQ GRP  (Vayama)

501st US ARMY DEPOT (FIELD DEPOT) 18 Mar 67 - 20 Dec 68 (Korat)

503rd MEDICAL BATTALION

505th TRANSPORTATION COMPANY (CARGO) 12 Nov 66 - 30 Dec 70 (Sattahip)

509th ARMY SECURITY AGENCY UNIT (Ramasun)

511th SUPPLY COMPANY (GENERAL SUPPORT) 5 Jan 67 - 20 Dec 68 (Korat)

513th MILITARY POLICE DETACHMENT (Friendship)

519th TRANSPORTATION BATTALION, HHD (TRUCK) 16 Dec 66 - 20 Feb 71 (Korat)

528th ENGINEER COMPANY

537th ENGINEER BATTALION (Samae San)

538th ENGINEER BATTALION (CONSTRUCTION) Company 14 Jul 65 - 15 Jun 70 (Korat)

538th ENGINEER BATTALION , (CONSTRUCTION) 1965-70  (Friendship)

538th ENGINEER BATTALION , C COMPANY  (Vayama)

538th ENGINEER BATTALION , D PLATOON (Samae San)

53rd TRANSPORTATION COMPANY (CARGO) 10 Apr 67 - 30 Dec 70 (Sattahip)

549th ENGINEER DETACHMENT (CA)

549th QUARTERMASTER COMPANY

54th ENGINEER COMPANY (CONSTRUCTION SUPPORT) 20 Dec 68 - 15 Jun 70 (Sakhon Nakhon)

556th MAINTENANCE COMPANY (LIGHT DIRECT SUPPORT) 7 Feb 68 - 1 Jul 69 (Kanchanaburi)

558th SUPPLY & SERVICE BATTALION (GENERAL SUPPORT) 17 Mar 66 - 1 Jul 69 (Kanchanaburi)

558th SUPPLY & SERVICE COMPANY (HEAVY MATERIAL SUPPORT) 15 Jul 65 - 20 Dec 68 (Korat)

55th SIGNAL COMPANY (SUPPORT) 1 Jul 65 - 1 Jul 69 (Korat)

561st ENGINEER COMPANY (CONSTRUCTION) 10 Aug 63 - 15 Jun 70 (Kanchanaburi)

562nd MAINTENANCE COMPANY (LIGHT DIRECT SUPPORT) 13 Jan 67 - 25 Jun 71(Sattahip)

569th TRANSPORTATION COMPANY (CARGO) 1 Dec 67 - 1 Apr 70 (Khon Kaen)

579th QUARTERMASTER COMPANY

57th MAINTENANCE COMPANY (DIRECT SUPPORT) 1 Apr 63 - 20 Feb 71 (Korat)

590th SUPPLY & SERVICE COMPANY (DIRECT SUPPORT) 30 Sep 63 - 20 Dec 68 (Korat)

593rd ENGINEER COMPANY (CONSTRUCTION) 6 Jun 63 - 1 Aug 63 (Korat)

596th QUARTERMASTER COMPANY (PETROLEUM DEPOT) 27 Jun 66 - 20 Dec 66 (Sattahip)

597th ENGINEER COMPANY (Essayons)

597th MAINTENANCE COMPANY (DIRECT SUPPORT) 9 May 66 - 1 Sep 69 (Korat)

597th TRANSPORTATION COMPANY (Vayama)

599th ORDNANCE COMPANY (AMMUNITION DIRECT/GENERAL SUPPORT) 7 May 67 - 25 Jun 71 (Sattahip)

5th MEDICAL HOSPITAL (FIELD HOSPITAL) 9 May 66  - 10 Nov 70 (Bangkok)

5th RADIO RESEARCH UNIT, DETACHMENT "D" 1965  (Ramasun)

640th TRANSPORTATION DETACHMENT (TUGBOAT) (Samae San)

697th ENGINEER COMPANY (PIPELINE CONSTRUCTION SUPPORT) 29 Aug 65 - 1 Dec 69

697th ENGINEER COMPANY (PIPELINE) (Samae San)

70th AVIATION FLIGHT DETACHMENT (Friendship)

712th PRIMARY MEDICAL UNIT (USARTHAI & Friendship)

720th MILITARY POLICE BATTALION  (Friendship)

738th ENGINEER COMPANY (SUPPLY POINT) 2 Mar 63 - 15 Jul 65 (Korat)

7th AIRLIFT PLATOON (Friendship)

7th ARMY SECURITY AGENCY UNIT (FIELD STATION) 15 May 62 - 30 Jun 71 (Bangkok)

7th MAINTENANCE BATTALION (DIRECT SUPPORT)15 Jul 65 - 25 Jun 71  (Korat)

7th RADIO RESEARCH FIELD STATION, B COMPANY (Khao Khieo) (Ramasun)

809th ENGINEER BATTALION (CONSTRUCTION) 24 Mar 62 - 3 Feb 71 (Phanom Sarakham)

809th ENGINEER BATTALION, B COMPANY  (Vayama)

809th ENGINEER BATTALION, B COMPANY  (NKP)

809th ENGINEER BATTALION, C COMPANY  (Raum Chit Chi) (Sakhon Nakhon)

809th ENGINEER BATTALION, D COMPANY  (Ku Su Mon) (Sakhon Nakhon)

83rd RADIO RESEARCH SPECIAL OPERATIONS UNIT

89th MILITARY POLICE DETACHMENT

91st ENGINEER COMPANY (DUMP TRUCK) 7 Aug 67 - 15 Jun 70 (Kanchanaburi)

93rd PSYCHOLOGICAL OPERATIONS COMPANY (SPECIAL WARFARE) 23 Jun 67 - 30 Jun 74 (Bangkok)

972nd SIGNAL BATTALION

999th ENGINEER BATTALION (Friendship)

999th SIGNAL BATTALION 1961-62  (Ramasun)

9th PROPERTY BOOK OFFICE, Sattahip (9th Log)

9th LOGISTICAL COMMAND, HHD (LOGISTICS SUPPORT) Apr 63 - 12 Jun 70 (Korat, Sattahip)

9th LOGISTICAL PAD 55/56  (Friendship)

9th TERMINAL COMMAND (Samae San)

AMSF-T (Bangkok)

AREA MATERIAL SUPPLY FACILITY (Samae San)

BANGKOK SIGNAL BATTALION (PROVISIONAL) (SUPPORT) Unknown - 14 Jul 69 (Bangkok)

Cobra-7 (Ramasun)

DCA (Friendship)

DCA-SAM

DCSSPO (Friendship)

DEPCHJUSMAGTHAI (PROJ 404)                        

H&S COMPANY (Ramasun)

I&S DIV

JOINT TASK FORCE 116  (Friendship)

JOINT US MILITARY AGENCY GROUP (JUSMAG) (Friendship)

MILITARY ASSISTANCE COMMAND THAILAND (MACTHAI)

MILITARY ASSISTANCE COMMAND THAILAND SUPPORT GROUP (Samae San)

MILITARY ASSISTANCE COMMAND THAILAND (MACTHAI), HHC (Samae San)

MARS (Friendship)

STRATCOM SIGNAL BATTALION (PROVISIONAL) (LONG LINES COMMUNICATIONS) Unknown - 14 Jul 69 (Udorn - Ubon)

TASK FORCE ALPHA

TRANSPORTATION MOVEMENT OFFICE I (Sattahip)

TRANSPORTATION MOVEMENT OFFICE II (Korat)

TRANSPORTATION MOVEMENT OFFICE III (Udorn)

US EMBASSY ATTACHMENT OFFICE (Friendship)

USA BANGKOK AREA COMMAND (PROVISIONAL)

USA CENTRAL IDENTIFICATION LABORATORY THAILAND (CILTHAI) (Samae San)

USA DEPOT THAILAND (PROVISIONAL)

USA DEPOT, UDORN DETACHMENT (PEPPERGRINDER)

USA MATERIAL COMMAND, B COMPANY

USA SATTAHIP AREA COMMAND (PROVISIONAL)

USA SPECIAL TROOPS BANGKOK

USA SPECIAL TROOPS KORAT

USA SPECIAL TROOPS SATTAHIP

USA SUPPORT COMMAND, THAILAND (USARSUPTHAI)

USA TERMINAL COMMAND

USA TERMINAL COMMAND, DEEP WATER PORT (Samae San)

USA TRANSPORTATION ACTIVITY, SSO BKK

USACC-THAILAND

USACC-THAILAND-I&S (U.S. Army Communications Command-Thailand)

USARSUPTHAI (Friendship)

USARSUPTHAI (Samae San)

USARSUPTHAI CE Division (Friendship)

USARSUPTHAI DCSSPO (Samae San)

USARSUPTHAI G-3 Section (Friendship)

USARSUPTHAI HHD Liaison (Friendship)

USARSUPTHAI, CE DIV

USARSUPTHAI, HHD (Friendship)

USASCCCCA (Friendship)

USASDT

USASTRATCOM FAC (Samae San) (Warin)

USASTRATCOM UDORN

USASTRATCOM-I&S (INTELLIGENCE & SECURITY DIVISION) (Phu Mu)

USASTRATCOM-Thailand (Phu Mu)

USATA (Samae San)

USMAAG

USMAGTHAI

USMAGTHAI, SUP GRP A

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