When did the last living fleet admiral who played a major role in the naval history of World War II as Commander in Chief, United States Pacific Fleet, die?
1966
Fleet admiral (United States)
Fleet admiral (abbreviated FADM), officially known as "Fleet Admiral of the United States Navy", is a five-star flag officer rank in the United States Navy.
 Fleet admiral ranks immediately above admiral and is equivalent to General of the Army and General of the Air Force.
 Although it is a current and authorized rank, no U.S. Navy officer presently holds it, with the last living U.S. Navy fleet admiral being Chester W. Nimitz, who died in 1966.
Chester W. Nimitz
Chester William Nimitz, Sr. ( ; February 24, 1885February 20, 1966) was a fleet admiral of the United States Navy.
 He played a major role in the naval history of World War II as Commander in Chief, United States Pacific Fleet (CinCPac) and Commander in Chief, Pacific Ocean Areas (CinCPOA), commanding Allied air, land, and sea forces during World War II.
Lawrence Fairfax Reifsnider
Lawrence Fairfax Reifsnider (November 26, 1887 – May 14, 1956) was an American football player and a vice admiral in the United States Navy.
 A native of Westminster, Maryland, Reifsnider attended the United States Naval Academy where he played college football at the halfback position for the Navy Midshipmen football team.
 He was selected by Walter Camp in 1908 as a second-team All-American.
 After graduating from the Naval Academy, Reifsnider served in the United States Navy until 1947, attaining the rank of vice admiral.
 He served as a submarine commander in World War I, aboard the USS "O-5" and USS "E-2" submarines.
 He later commanded the cruiser USS "Memphis", served as chief of the United States Naval Mission in Colombia, as chief of the Pacific Fleet Amphibious Training Command, and as commandant of the Eighth Naval district in New Orleans.
 He received the Legion of Merit and two Distinguished Service Medals for his service in World War II. Fleet Marine Force, Pacific
The United States Fleet Marine Force, Pacific (FMFPAC) is the largest maritime landing force in the world.
 Its units are spread across the Pacific Ocean and reports to the United States Pacific Command.
 It is headquartered at MCB Camp H. M. Smith, HI and directs and commands all the subordinate elements of the Navy Expeditionary Strike Force and Marine Air-Ground Task Force components that follow under the 3rd, 5th, and 7th Fleet and the Marine Corps Forces, Pacific (MARFORPAC).
 The Commanding General of Marine Corps Forces, Pacific is dual-posted as the Commanding General of Fleet Marine Force, Pacific.
 FMFPAC is under operational control of the Commander, United States Pacific Fleet (COMPACFLT), when deployed. Nimitz-class aircraft carrier
The "Nimitz"-class supercarriers are a class of ten nuclear-powered aircraft carriers in service with the United States Navy.
 The lead ship of the class is named after World War II United States Pacific Fleet commander Fleet Admiral Chester W. Nimitz, the U.S. Navy's last fleet admiral.
 With an overall length of 1092 ft and full-load displacement of over 100,000 long tons, they have been the largest warships built and in service. National Museum of the Pacific War
The National Museum of the Pacific War is located in Fredericksburg, Texas, the boyhood home of Fleet Admiral Chester W. Nimitz.
 Fleet Admiral Nimitz served as CinCPAC, Commander in Chief, United States Pacific Fleet during World War II.
 The six acre site includes the Admiral Nimitz Museum which is housed in the old Nimitz Hotel and tells the story of Fleet Admiral Nimitz beginning with his life as a young boy through his naval career as well as the evolution of the old hotel. COMDESPAC
Destroyer Force, United States Pacific Fleet, usually known as COMDESPAC, was a type command of the United States Pacific Fleet from 1940 until the Destroyer Force was combined with Cruisers, Pacific Fleet and in 1975 type command functions of both were transferred to Commander, Naval Surface Forces Pacific.
 The Pacific Fleet Destroyer Force comprised the Destroyers of the fleet (DD) operating in Pacific Fleet area of responsibility.
 The Commander, Destroyers, Pacific Fleet supervised the assignments, basing, maintenance of the destroyers, the training of crews and reported to the Commander in Chief, United States Pacific Fleet (CinCPac), on Destroyer operations. Maurice F. Weisner
Maurice Franklin Weisner (November 20, 1917 – October 15, 2006) was a United States Navy four-star admiral who served as Vice Chief of Naval Operations (VCNO) from 1972 to 1973; Commander in Chief, U.S. Pacific Fleet (CINCPACFLT) from 1973 to 1976; and Commander in Chief, United States Pacific Command (CINCPAC) from 1976 to 1979.
 He served in World War II as a naval aviator aboard the USS "Wasp" (CV-7) until it was sunk in September 1942. Ernest King
Ernest Joseph King (23 November 1878 – 25 June 1956) was Commander in Chief, United States Fleet (COMINCH) and Chief of Naval Operations (CNO) during World War II.
 As COMINCH-CNO, he directed the United States Navy's operations, planning, and administration and was a member of the Joint Chiefs of Staff.
 During World War II, he was the U.S. Navy's second most senior officer after Fleet Admiral William D. Leahy, who served as Chief of Staff to the Commander in Chief. United States Fleet
The United States Fleet was an organization in the United States Navy from 1922 until after World War II.
 The acronym CINCUS, pronounced "sink us", was used for Commander in Chief, United States Fleet.
 This was replaced by COMINCH in December 1941, under , when it was redefined and given operational command over the Atlantic, Pacific, and Asiatic Fleets, as well as all naval coastal forces.
 authorized the offices of the CNO and COMINCH to be held by a single officer; Admiral Ernest J. King was first to do so, and 1944 was promoted to the five-star rank of fleet admiral.