The II Corps was a corps of the Army of the Republic of Vietnam

Army of the Republic of Vietnam

The Army of the Republic of Viet Nam , sometimes parsimoniously referred to as the South Vietnamese Army , was the land-based military forces of the Republic of Vietnam , which existed from October 26, 1955 until the fall of Saigon on April 30, 1975...

 (ARVN), the army of the nation state of South Vietnam

South Vietnam

South Vietnam was a state which governed southern Vietnam until 1975. It received international recognition in 1950 as the "State of Vietnam" and later as the "Republic of Vietnam" . Its capital was Saigon...

 that existed from 1955 to 1975. It was one of four corps in the ARVN, and it oversaw the region of the central highlands

Tây Nguyên

Tây Nguyên, translated as Western Highlands and sometimes also called Central Highlands, is one of the regions of Vietnam. It contains the provinces of Đắk Lắk, Đắk Nông, Gia Lai, Kon Tum, Lâm Đồng....

 region, north of the capital Saigon. Its corps headquarters was in the mountain town of Pleiku

Pleiku

Pleiku is a town in central Vietnam, located in that nation's central highland region. It is the capital of the Gia Lai Province; it is inhabited primarily by the Bahnar and Jarai ethnic groups, sometimes known as the Montagnards or Degar....

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One notable ARVN unit of II Corps, the 3d Armored Cavalry Squadron

3d Armored Cavalry Squadron (South Vietnam)

The 3d Armored Cavalry Squadron of the Army of the Republic of Vietnam — the army of the nation state of South Vietnam that existed from 1955 to 1975 — was part of II Corps that oversaw the twelve provinces of the central highlands; corps headquarters being in the mountain town of Pleiku...

, earned the Presidential Unit Citation (United States).