The Battle of Leyte Gulf, generally considered to be the largest naval combat in history, was fought 24–25 October 1944 in the waters of the Philippine Islands by elements of the Imperial Japanese Navy's Combined Fleet (bringing together the IJN's 2nd Fleet, 3rd Fleet and 5th Fleet) and the United States Navy's Pacific Fleet (bringing together the USN's 3rd Fleet and 7th Fleet). Of the five separate engagements that made up the battle as a whole, the forces involved in the three principal ones are listed here.