In the Pacific Theater of operations of World War II, the British warships in the Far East constituted the British Pacific Fleet from November 22, 1944, taking part in several military engagements, providing fire and air support to US landing troops, specially in the Battles of Iwo Jima and Okinawa. In late 1944, the British warships that operated together with the US 5th Fleet under Admiral Raymond Spruance received the combat designation of Task Force 57 (TF57) from the United States Navy. However, TF57 would be redesignated TF37 in May 1945 under Admiral William Halsey.
It was composed of 6 aircraft carriers (HMS Implacable, HMS Indefatigable, HMS Formidable, HMS Victorious R38, HMS Illustrious R87, and HMS Indomitable 92), 4 battleships (HMS Howe, King George V, Duke of York, and Anson), 7 cruisers, and 18 destroyers. At Okinawa only 4 of the 6 carriers, 2 battleships, 5 cruisers, and 14 destroyers took part in the battle. The best fighter aircraft that took off from the flight decks of the British carriers were the Seafire, which was the naval version of the Supermarine Spitfire, and the American F4U Corsair.