I Field Force, Vietnam was a

corps Corps (; plural ''corps'' ; from French , from the Latin "body") is a term used for several different kinds of organization. A military innovation by Napoleon I, the formation was formally introduced March 1, 1800, when Napoleon ordered Gener ...

-level command of the

United States Army The United States Army (USA) is the primary Land warfare, land service branch of the United States Department of Defense. It is designated as the Army of the United States in the United States Constitution.Article II, section 2, clause 1 of th ...

during the

Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...

. Activated on 15 March 1966, it was the successor to Task Force Alpha, a provisional corps command created 1 August 1965 (renamed

Field Force A field force in British, Indian Army and Tanzanian military parlance is a combined arms land force operating under actual or assumed combat circumstances, usually for the length of a specific military campaign. It is used by other nations, but c ...

Vietnam on 25 September) for temporary control of activities of U.S. Army ground combat units arriving in Vietnam. I Field Force was a component of U.S. Military Assistance Command Vietnam (MACV) and had its headquarters at

Nha Trang Nha Trang ( or ; ) is a coastal city and capital of Khánh Hòa Province, on the South Central Coast of Vietnam. It is bounded on the north by Ninh Hoà town, on the south by Cam Ranh city and on the west by Diên Khánh District. The city had ...

Area of Responsibility and Units Assigned

I Field Force's area of responsibility was II Corps Tactical Zone, later renamed Military Region 2, which comprised the twelve provinces of Vietnam's Central Highlands. Among the divisions and brigades it controlled were: *

1st Cavalry Division (Airmobile) 1st Cavalry, 1st Cavalry Division, 1st Cavalry Brigade, 1st Cavalry Regiment or 1st Cavalry Battalion may refer to: Armies * 1st Cavalry Army, Soviet Union Corps * I Cavalry Corps (Grande Armée) * I Cavalry Corps (German Empire) * 1st Cavalry ...

* 4th Infantry Division *3d Brigade, 25th Infantry Division *1st Brigade,

101st Airborne Division The 101st Airborne Division (Air Assault) ("Screaming Eagles") is a light infantry division (military), division of the United States Army that specializes in air assault military operation, operations. The 101st is designed to plan, coordinat ...

173rd Airborne Brigade The 173rd Airborne Brigade ("Sky Soldiers") is an Airborne forces, airborne infantry brigade combat team (IBCT) of the United States Army based in Vicenza, Italy. It is the United States European Command's conventional airborne strategic respo ...

* 41st Artillery Group *52nd Artillery Group *77th Radar Detachment *54th Signal Battalion

Inactivation

I Field Force was inactivated on 30 April 1971 during the withdrawal of U.S. ground combat forces from Vietnam, and its assets formed the basis for its successor, the Second Regional Assistance Command (SRAC).

Commanders

*LTG Stanley R. Larsen March 1966 – July 1967 *LTG William B. Rosson July 1967– February 1968 *LTG William R. Peers March 1968 – March 1969 *LTG Charles A. Corcoran March 1969 – March 1970 *LTG Arthur S. Collins Jr. March 1970 – January 1971 *MG Charles P. Brown January 1971 – April 1971Association of I Field Force, IFFV Commanders
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Notes

Sources

* * {{Authority control Military units and formations of the United States Army in the Vietnam War Corps of the United States Army Military units and formations established in 1966 Military units and formations disestablished in 1971