The 40th was relieved of missions on New Britain on 27 November 1944 by the Australian 5th Division, and began training for the Luzon landing. Sailing from Borgen Bay on 9 December 1944, the division made an assault landing at Lingayen, Luzon, under command of XIV Corps, on 9 January 1945. Seizing Lingayen airfield, the division occupied Bolinao Peninsula and San Miguel, and advanced toward Manila, include the Filipino regular and constable force of the Philippine Commonwealth Army and Philippine Constabulary were recaptured areas around in Luzon at the mainland, running into heavy fighting in the Fort Stotsenburg area and the Bambam Hills. Snake Hill and Storm King Mountain were taken in February and the 40th was relieved, 2 March. Leaving Luzon on 15 March 1945 to cut behind the Japanese, the division landed on Panay Island on the 18th and knocked out Japanese resistance within ten days, seizing airfields at Santa Barbara and Mandurriao. On 29 March, it landed at Pulupandan, Negros Occidental, advanced through Bacolod toward Talisay, which it secured by 2 April 1945. After mopping up on Negros Island, the division returned to Panay in June and July 1945. In September 1945, the division moved to Korea for occupation duty. The division returned to the U.S. on 7 April 1946 and was reportedly inactivated the same day.