From 29 April to 9 June 1945, she protected Polloc Harbor, Mindanao, and operated with the Davao Gulf 3d Resupply Echelon and the Davao Gulf Attack Unit. "Leland E. Thomas" bombarded Falisay Point area, north of Cape San Augustan, Davao Gulf on 19 May and on 1 June with the destroyer shelled Luayan Point. The same task unit participated in the landing on Balut Island, Sarangani Group. The ship headed for Borneo escorting to a fueling with the task group which bombarded Balikpapan, Borneo. Later she patrolled the outer anchorage area in Balikpapan during the initial landings. On 20 July she set course for Subic Bay, arriving 28 July. "Leland E. Thomas" was busy escorting convoys between Subic Bay and Okinawa when the war ended 15 August, and continued on this duty, touching at Manila and other Philippine Islands ports until 28 November.