United States Army Vietnam

United States Army Republic of Vietnam (USARV) was an corps-level support command of the United States Army in the Vietnam War. USARV was created on July 20, 1965 out of the U.S. Army Support Command, Vietnam.

Long Binh headquarters
By mid-1967, almost all of U.S. Army Vietnam HQ Command (USARV), 1st Logistics Command, and many other Army units dispersed in Saigon were moved to Long Binh Post to resolve centralization, security, and troop billeting issues. Long Binh Post was a sprawling logistics facility and the largest U.S. Army base in Vietnam with over 50,000 women and men.

Function
USARV controlled the activities of all U.S. Army service and logistical units in South Vietnam until May 15, 1972, when its structure was merged with the Military Assistance Command, Vietnam (MACV) to become USARV/MACV Support Command, which was disbanded on March 28, 1973 after completion of withdrawal of all combat and support units.

USARV controlled nine major support commands in Vietnam, and also supervised 71 smaller units under the organizational titles "offices", "agencies", "groups", "facilities", "centers", "depots", "teams", "activities", "elements", "companies", and "detachments". Its nine major commands were:
 * 1st Logistics Command
 * 1st Aviation Brigade
 * 18th Military Police Brigade
 * 34th General Support Group
 * 44th Medical Brigade
 * 525th Military Intelligence Group
 * U.S. Army Security Agency Group
 * U.S. Army Engineer Command (Provisional)
 * U.S. Army Headquarters Area Command (USAHAC)