William Daniel Leahy

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Fleet Admiral William Daniel Leahy (6 May, 1875 – 20 July, 1959) served in the United States Navy. During the Second World War he was Chief of Staff to President Roosevelt and also served as ambassador to Vichy France.

Life & Career

William Daniel Leahy was born in Hampton, Iowa on 6 May, 1875. He was appointed to the U.S. Naval Academy from Wisconsin and entered the Naval Academy on 19 May, 1893. He graduated with the Class of 1897 as part of the Engineer Division, which by the regulations of the time prevented from appointment to command positions.[1]

Leahy was promoted to the rank of Ensign on 1 July, 1899.[2]

Leahy was promoted to the rank of Lieutenant, skipping the rank of Lieutenant (Junior Grade), on 31 December, 1903, subject to examiniation and confirmation.[3]

Leahy was promoted to the rank of Lieutenant Commander on 15 September, 1909.[4]

Leahy was promoted to the rank of Commander on 29 August, 1916.[5]

Leahy was promoted to the rank of Captain on 3 June, 1921.[6]

Leahy was promoted to the rank of Rear Admiral on 6 April, 1930.[7]

See Also


  • Adams, Henry H. (1985). Witness to Power: The Life of Fleet Admiral William D. Leahy. Annapolis, MD: Naval Institute Press.

Service Records

Naval Appointments
Preceded by
New Command
Captain of U.S.S. Sands
10 Nov, 1920
Succeeded by
Robert L. Ghormley
Preceded by
Claude C. Bloch
Chief of the Bureau of Ordnance
14 Oct, 1927[8] – 1 Jun, 1931[9][Inference]
Succeeded by
Edgar B. Larimer
Preceded by
Frank B. Upham
Chief of the Bureau of Navigation
1 Jul, 1933[10] – 30 Jun, 1935[11][Inference]
Succeeded by
Adolphus Andrews
Preceded by
William H. Standley
Chief of Naval Operations
2 Jan, 1937[12] – 1 Aug, 1939[13]
Succeeded by
Harold R. Stark


  1. Register of Officers, 1897. p. 64.
  2. Register of Officers, 1902. pp. 36-37.
  3. Register of Officers, 1904. pp. 36-37.
  4. Register of Officers, 1912. pp. 24-25.
  5. Register of Officers, 1920. p. 14.
  6. Register of Officers, 1924. p. 14.
  7. Register of Officers, 1938. p. 14.
  8. Register of Officers, 1930. pp. 12-13.
  9. Register of Officers, 1934. pp. 26-17.
  10. Register of Officers, 1934. pp. 14-15.
  11. Register of Officers, July 1936. pp. 16-17.
  12. Wikipedia
  13. Wikipedia