III Corps () was a corps of the

Army of the Republic of Vietnam The Army of the Republic of Vietnam (ARVN; ; french: Armée de la république du Viêt Nam) composed the ground forces of the Republic of Vietnam Military Forces, South Vietnamese military from its inception in 1955 to the Fall of Saigon in April ...

(ARVN), the army of the nation state of

South Vietnam South Vietnam, officially the Republic of Vietnam ( vi, Việt Nam Cộng hòa), was a state in Southeast Asia that existed from 1955 to 1975, the period when the southern portion of Vietnam was a member of the Western Bloc during part of th ...

that existed from 1955 to 1975. It was one of four corps in the ARVN, and oversaw the region of the country surrounding the capital

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. III Corps was activated in September 1959 and controlled the country south of

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excluding Saigon which was controlled by the Capital Military District. In 1962, President Ngô Đình Diệm decided to split the Corps into two, the former III Corps area being reduced in size to cover the area northeast of Saigon and the newly created IV Corps taking over the west and southwest. The Fifth Division based in

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on the northern outskirts of Saigon was a part of III Corps, and due to the division's close proximity to the capital was a key factor in the success or failure of the various coup attempts in the nation's history. Map of III CTZ

Divisions

File:ARVN 5th Division SSI.svg, 5th Infantry Division File:ARVN 18 Division SSI.svg, 18th Infantry Division File:ARVN 25th Infantry Division SSI.svg, 25th Infantry Division

References

Corps level formations of South Vietnam Military units and formations established in 1955 Military units and formations disestablished in 1975 1955 establishments in South Vietnam {{mil-unit-stub