Source: 45th Transportation Battalion
The 45th Quartermaster Regiment with three battalions was originally constituted on 1 May 1936. It was redesignated as the 45th Quartermaster Truck Regiment on 1 April 1942 and activated on 9 May 1942. On 7 September 1943, it embarked from Los Angeles Port of Embarkation, Wilmington, California, to participate in the China-Burma-India Campaign.
On 1 December 1943, the Regiment was broken up and the units were redesignated. The 45th Quartermaster Truck Regiment became the 45th Quartermaster Group with the 1st Battalion redesignated the Headquarters and Headquarters Detachment, 45th Quartermaster Battalion, Mobile and the 2nd Battalion became 68th Quartermaster Battalion, Mobile. The Companies A through M were also redesignated to numbered companies, 3466th through 3468th, and followed separate lineages.
The 45th QM Group embarked from the Karachi Port of Embarkation, Karachi, India, on 4 November 1945 and disembarked at New York Port of Embarkation. The unit was once again inactivated on 26 November 1945 at Camp Kilmer, New Jersey.
After the helicopter came into prominence in the US Army, the battalion was redesignated the Headquarters and Headquarters Detachment, 45th Transportation Battalion (Helicopter) on 1 March 1954. It was activated in Korea on 1 April 1954. The battalion served in Korea until 5 January 1955 when it was transferred (less personnel) from Armed Forces Far East to Fort Sill, Oklahoma to form the nucleus of the Helicopter Training Command. While at Fort Sill, the battalion took part in numerous large field exercises. It served as the headquarters for the AAUTC, taking its part in the job of transitioning pilots for all parts of the world, and the formation of Helicopter companies.
On 1 July 1962, the 45th Transportation Battalion (Transport Aircraft) went to Vietnam on temporary duty from Okinawa. At this time, the Army only supported the training of the Army of the Republic of South Vietnam (ARVN). Other than advisors, the first units to arrive in Vietnam were helicopter Transportation units. On 22 March 1963, the 45th Battalion status changed from Temporary Change of Station to Permanent Change of Station to Vietnam. During this time, it received the Hughes Army Aviation Trophy for support of Army mission. For its services in Vietnam, the battalion received the Vietnam Army Cross. It had responsibility for the following:
HHD, 45th Battalion was redesignated HHD, 145th Combat Aviation Battalion on 24 September 1963. It remained in Vietnam until 2 April 1972.
- 8th Transportation Company (Light Helicopter)
- 81st Transportation Company (Light Helicopter)
- 18th Aviation Company (Fixed Wing Light Transport)
- 57th Medical Detachment (Helicopter)
- 19th Quartermaster Detachment (Petroleum Quality Surveillance)
- 22nd Quartermaster Detachment (Petroleum Bulk Storage and Issue)
- 24th Quartermaster Detachment (Petroleum Bulk Storage and Issue)