Kolombangara (12–13 July 1943, Japanese tactical victory against Allies, strategically inconclusive) Battle of Vella Gulf (6-7 August 1943, major US victory; USN sinks three destroyers without loss) Battle off Horaniu (17-18 August 1943, Japanese defensive victory against US) Battle of Vella Lavella (6 October 1943, Japanese defensive victory against US) Battle of Empress Augusta Bay (1 November 1943, US victory) Second Battle of Rabaul (2-11 November 1943, Allied victory) Battle of Cape St. George (25 November 1943, major US victory; USN sinks three destroyers without loss) Battle of Truk (17-18 February 1944, major US victory; IJN loses 15 warships and 32 merchant ships) Battle of the Philippine Sea (19 June 1944, decisive US victory; IJN loses three carriers and hundreds of aircraft) Battle of Formosa (12-16 October 1944, major US victory; IJN loses hundreds of aircraft) Battle of Leyte Gulf (23-26 October 1944, decisive Allied victory; IJN loses 26 warships, including four carriers and three battleships) Battle off Samar (25 October 1944, Japanese tactical victory, US strategic victory) Battle of Ormoc Bay (11 November-21 December 1944, US victory) First Battle of Kure (19 March 1945, Japanese defensive victory against US) Battle of the Malacca Strait (15-16 May 1945, RN victory) Battle of Okinawa (1 April–22 June 1945, major Allied victory; IJN loses a battleship and 15 other warships) Operation Kikusui (6 April–22 June 1945, Allied defensive victory) Operation Ten-Go (7 April 1945, major US victory; destruction of the battleship ) Battle of Yokosuka (18 July 1945, Allied victory) Battle of Tokyo Bay (22–23 July 1945, US victory) Second Battle of Kure (24-28 July 1945, major Allied victory; most of remaining IJN warships are sunk) See also List of Japanese battles Imperial Japanese Navy Japanese Imperial Battles