1946 to 1947 – Aspirant (i.e. Warrant Officer), NCO School of Vien Dong (Dap Da)
July 1948 – 1st Lieutenant, South Vietnam Militia Guards
July 1954 – Captain then Major, Deputy Chief of General Staff/Logistics, JGT
August 1957 – Colonel, Chief of Joint General Staff
1957 to 1958 – Attended High Command and General Staff in USA
1958 to February 1960 – 4th Field Division Commander
February 1960 to December 1962 – Commanding General, 21st Infantry Division
December 1962 to November 1963 – Inter-Arms Chief of General of Staff
December 1962 Promoted to – Major General
November 1963 Promoted to – Lieutenant General
December 1963 to January 1964 – III Corps Commander
January 1964 to September 1964 – Defense Minister/Chairman of Joint General Staff
July 1964 – Promoted to General
October 1964 to October 1965 – Ambassador to the United States
October 1965 to May 1968 – Ambassador to Taiwan
May 1968 to 1969 – Interior Minister
1969 to September 1969 – Deputy Prime Minister
September 1969 to April 1975 – Prime Minister/Defense Minister
Preceded by
Tran Van Huong Prime Minister of South Vietnam
1969-1975 Succeeded by
Nguyen Ba Can








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