It was apparently an insignificant event when a few Marine planes flew into a muddy airfield at Tacloban on the island of Leyte in the Philippines on 3 December 1944. All around them were the elements of the massive U.S. Army invasion which had begun on 20 October. Seven infantry divisions and six Army Air Force (AAF) air groups dominated the island scene. It was the start of a major campaign in which Marine aviation would play a major role. That is the campaign to liberate the Philippines.