Fleet Admiral William D. Leahy
(1875 -1959)
 
William D. Leahy (1875 - 1959) was the first American Naval officer to hold the rank of Fleet Admiral and the first to hold five-star rank in the U.S. Armed Forces.
 
During his remarkable career in the service of his country, Leahy served as an ensign in the Spanish-American War, Chief of Naval Operations, Governor of Puerto Rico, Ambassador to France, Chief of Staff of the Commander in Chief, and Fleet Admiral of the United States Navy.