major amphibious landing including: Eniwetok , Saipan , Guam , Tinian , Angaur , Ulithi , Peleliu , Leyte , Lingayen Gulf , Zambales , Iwo Jima , Okinawa , Labuan , Brunei Bay , and on 4 July 1945 at Balikpapan on Borneo , which was the last UDT demolition operation