| I Field Force, Vietnam | |
|---|---|
 I Field Force Vietnam shoulder sleeve insignia | |
| Active | 1966–1971 |
| Country |  United States of America |
| Branch |  United States Army |
| Type | Command |
| Size | Corps |
| Part of |  Military Assistance Command, Vietnam |
| Headquarters | Nha Trang |
| Engagements | Vietnam War |
| Insignia | |
| Distinctive Unit Insignia |  |
I Field Force, Vietnam was a corps-level command of the United States Army during the Vietnam War. Activated on 15 March 1966, it was the successor to Task Force Alpha, a provisional corps command created 1 August 1965 (renamed Field Force Vietnam on 25 September) for temporary control of activities of U.S. Army ground combat units arriving in Vietnam.[1] I Field Force was a component of U.S. Military Assistance Command Vietnam (MACV) and had its headquarters at Nha Trang.
- ^ Eckhardt, George. Vietnam Studies: Command and Control. Washington, DC: Department of the Army. pp. 53–54.