Summarized from Stantons’s Vietnam Order Of Battle

Items in red are changes to the Order Of Battle based on information from people who were there at the time

US Army Support Command

In the summer of 65, the 29^th Quartermaster Group and the 5^th Ordnance Bn from Ft Sill (later 5^th Maint Bn) were
utilized to staff US Army Support Command, Qui Nhon (provisional).Authorized strength at that time was 101.
Provisional was dropped 10 February 66. to become US Army Support Command. Qui Nhon . Departing date
was 30 April 1972.

5^th Maintenance Battalion Phu Tai

In 1966 5^th Ord Bn was changed to 5^th Maintenance Bn and relocated to Phu Tai where it became part of 593^rd General Support Group.

It was the 169^th Ordnance Battalion which was re-designated The 5th Maintenance Battalion.

Hq moved to Phu Tai in 1967

Inclusion into the 593^rd General Support Group came later after November 1968

Hq & Main Support Co – QN Arrived 20 August 1966 Departed 15 November 1970

Troop strength 277

Created from the 618th Ordnance Co (Maint) from Ft Stewart, Georgia

526^{th CC&S} – QN Arrived from Ft Riley 14 December 1965 Departed 1 September 1968

Troop strength 226
   Actually left out of Ft Hood TX by ship in Aug. 1965 as 129th Ord Co, arrived Cam Rahn Bay where it was split in half. Half went North to Qui Nhon and became the 526th CC&S

552^nd LEM – QN Arrived from Ft Riley 6 March 1967 Departed 1 April 1972

Troop strength 150

554^th LEM – QN Arrived from Ft Leonard Wood 29 April 1965 Departed 20 October 1969 Troop strength 156
Actually Aug 1966. Created in-country with the reorganization of the 56th Signal Co DS into the 554th LEM and the 85th LEM

560^th LEM - Danang ? Arrived from Ft Mead 11 March 1967 Departed 14 Dec1970 Troop strength 180
Actually arrived MSC compound Phu Tai then moved to Ahn Khe

618^th HEM -  QN Arrived from Ft Stewart 27 August 1965 Departed 20 October 1969

85^th LEM Danang Arrived from Ft Bliss 5 September 1965 Departed 31 August 1971
        Actually Aug 1966. Created in-country with the reorganization of the 56th Signal Co DS into the 554th LEM and the 85th LEM

86^th Maint Bn Cha Rang Valley

Arrived from Ft Devens 23 November 1966 Departed 23 December 1971

62^nd Maintenance Bn 45^th General Support Group, Pleiku

Arrived from Ft Bragg 7 January 1967 Departed 4 October 1972

149^th LEM - Pleiku Arrived from Ft Hood 27 August 1965 Departed 16 April 1971

The following according to the 1st Log Command Fact Book April 1968, from LBJ library. Found online part4 at http://www.mrfa2.org/Army1st.htm
US Army Support Command, Qui Nhon
593rd General Support Group
5th Maint Bn DS	after Nov '68
Hq & Main Support Co
526th CC&S
560th Lt Maint Co
86th Maint Bn
98th Lt Eqp Maint Co
160th Hvy Eqp Maint Co
618th Hvy Eqp Maint Co
and two others not legible
Pleiku Sub Area Command
45th General Support Group
62nd Maint Bn DS
149th Lt Maint Co
510th Eng Co Maint
The 552nd LEM doesn't appear to be included in the 62 Maint Bn at this time but is under Pleiku subcommand
US Army Support Command, Da Nang		est 25 February 1968
80th General Support Group
85th Lt Maint Co
12th OD Det Maint
188th QM Det Off Mach Repr
507th QM Det Refr
546th SC Det Depot