page_title: I Field Force, Vietnam
section_title: Area of Responsibility and Units Assigned
hierarchical_section_title: I Field Force, Vietnam / Area of Responsibility and Units Assigned
caption_attribution_description: English: Tactical Operations Center of FFI constructed at Nha Trang by the 864th Engineer Battalion
context_page_description: 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 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 and had its headquarters at Nha Trang.
context_section_description: 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)
  4th Infantry Division
  3d Brigade, 25th Infantry Division
  1st Brigade, 101st Airborne Division
  173rd Airborne Brigade
  41st Artillery Group
  52nd Artillery Group
  77th Radar Detachment
  54th Signal Battalion
caption: I Field Force Tactical Operations Center, Nha Trang, 13 July 1968
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