William Daniel Leahy was born in Hampton, Iowa, on 6 May 1875. He graduated from the U.S. Naval Academy in 1897
and was assigned to the battleship Oregon, serving in her through the Spanish-American War. In 1899, Ensign Leahy
was sent to the Asiatic Station, where he participated in the suppression of the Philippine Insurrection and of the
Boxer Rebellion in China. In the decade following his return to the United States in 1904, he served in the cruisers
Boston and California, was an instructor at the Naval Academy and chief of staff to the commander of U.S. forces in
Nicaragua.
In January 1937, Admiral Leahy became Chief of Naval Operations, serving for more than two years during a period marked
by increasing tensions in the Far East and Europe and by a gradual expansion of the Navy. During this time he frequently
had additional duty as Acting Secretary of the Navy. Following retirement in August 1939, Leahy was appointed Governor
of Puerto Rico. In late 1940, he became the United States Ambassador to France, serving in that very demanding position
until April 1942.
Upon his return home, Admiral Leahy was recalled to Navy service as Aide to President Franklin D. Roosevelt and as Senior
Member of the Joint Chiefs of Staff. As such, he played a critical role in the strategy, diplomacy and execution of the
Second World War. In recognition of these accomplishments, he received promotion to the rank of Fleet Admiral in December 1944.
After Roosevelt's death in April 1945, Leahy continued in his posts, assisting President Harry S. Truman in bringing about
final victory against Germany and Japan and then helping to guide the Nation in the early post-war years. Though he retired in
1949, Fleet Admiral Leahy technically remained on active duty until his death on 20 July 1959.
USS Leahy (DLG-16, later CG-16) was named in honor of Fleet Admiral Leahy.