On 20 October 1944, General Douglas MacArthur fulfilled his promise to return to the Philippines to begin the process of freeing the Philippine Islands from Japanese control. Prior to the Battle of Leyte Gulf, MacArthur waded ashore the island of Leyte. He would land on the main island of Luzon on 9 January 1945.
In one of the largest operations of WWII, MacArthur used four divisions (1st Cavalry, 7th, 24th and 96th Infantry, supported by the 21st Infantry Regiment and the 6th Ranger Battalion) from Lieutenant-General Walter Krueger's Sixth Army to land on Leyte. (More on the 6th Rangers here) This force was landed by the US Navy's Seventh Fleet led by Vice-Admiral Thomas Kincaid and supported by part of Admiral William Halsey's Third Fleet. The Japanese would counter attack on October 24th to initiate one of the largest naval battles in history.1