In October 1944, the 3rd Fleet was designated the "Northern Force" in a three-force plan to defeat the Allied invasion of the Japanese-held Philippines. The 3rd Fleet carriers were divested of all but 108 aircraft and sent to lure the American-led fleet away from protecting the troop landing ships. On 25–26 October, facing a large force that included ten USN carriers, with 600–1,000 aircraft, 3rd Fleet lost 4 aircraft carriers, one light cruiser and one destroyer at the Battle off Cape Engaño. The 3rd Fleet effectively ceased to exist, and was officially disbanded on 15 December 1944.