The Fifth Fleet is a numbered fleet of the United States Navy. It has been responsible for naval forces in the Persian Gulf, Red Sea, Arabian Sea, and parts of the Indian Ocean since 1995 after a 48-year hiatus. It shares a commander and headquarters with U.S. Naval Forces Central Command (NAVCENT) in Bahrain. Fifth Fleet/NAVCENT is a component command of, and reports to, U.S. Central Command (CENTCOM).
Established in 1944, the Fifth Fleet conducted extensive operations against Japanese forces in the Central Pacific during World War II. World War II ended in 1945, and the Fifth Fleet was deactivated in 1947. It remained inactive until 1995, when it was reactivated and assumed its current responsibilities.
World War II
The Fifth Fleet was initially established during World War II on 26 April 1944 from the Central Pacific Force under the command of Admiral Raymond Spruance. Central Pacific Force was itself part of Pacific Ocean Areas. The ships of the Fifth Fleet also formed the basis of the Third Fleet, which was the designation of the "Big Blue Fleet" when under the command of Admiral William F. Halsey, Jr. Spruance and Halsey would alternate command of the fleet for major operations, allowing the other admiral and his staff time to prepare for the subsequent one. A secondary benefit was confusing the Japanese into thinking that they were actually two separate fleets as the fleet designation flipped back and forth. Under Admiral Spruance, the Fifth Fleet was, by June 1944, the largest combat fleet in the world, with 535 warships.
While operating under Spruance's command as the Fifth Fleet, the fleet took part in the Mariana Islands campaign of June–August 1944, the Iwo Jima campaign of February–March 1945, and the Okinawa campaign of April–June 1945. During the course of these operations, it conducted Operation Hailstone (a major raid against the Japanese naval base at Truk) in February 1944, defeated the Imperial Japanese Navy in the Battle of the Philippine Sea in June 1944, and blunted the Japanese Operation Ten-Go – sinking the Japanese battleship Yamato in the process – in April 1945.
The British Pacific Fleet operated as part of the Fifth Fleet from March to May 1945 under the designation Task Force 57. Halsey then relieved Spruance of command and the British ships, like the rest of the Fifth Fleet, were resubordinated to the Third Fleet.
The Fifth Fleet's next major combat operation would have been Operation Olympic, the invasion of Kyushu in the Japanese Home Islands, scheduled to begin on 1 November 1945. The Atomic bombings of Hiroshima and Nagasaki made this operation unnecessary, and the Fifth Fleet did not return to combat again during the war.
The commanders of Fifth Fleet during this era were Admirals Spruance (26 April 1944 – 8 November 1945), John Henry Towers (8 November 1945 – 18 January 1946), Frederick C. Sherman (18 January 1946 – 3 September 1946), and Alfred E. Montgomery (5 September 1946 – 1 January 1947). The Fifth Fleet was deactivated in January 1947. The position of Commander, Fifth Fleet, became Commander, First Task Fleet. Montgomery became Commander, First Task Fleet, upon the deactivation of the Fifth Fleet.
In the Middle East after 1995
Prior to the first Gulf War in 1990–1991, U.S. naval operations in the Persian Gulf region were directed by the Commander, Middle Eastern Force (COMMIDEASTFOR). Since this organization was considered insufficient to manage large-scale combat operations during the Gulf War, the Seventh Fleet — primarily responsible for the Western Pacific and Indian Ocean and normally based in Japan – was given the temporary task of managing the force during the period. However, no numbered fleet existed permanently within the USCENTCOM area of responsibility. In 1995, John Scott Redd proposed and founded the only new U.S. Navy Fleet in half a century, serving as the first Commander, Fifth Fleet (COMFIFTHFLT) since World War II. After a 48-year hiatus, the Fifth Fleet was reactivated, replacing COMMIDEASTFOR, and it now directs operations in the Persian Gulf, Red Sea, and Arabian Sea. Its headquarters are at NSA Bahrain located in Manama, Bahrain.