View images taken from locations in the South Pacific during World War II, including Peleliu, Leyete, Tarawa and Iwo Jima. In 1942, as the United States entered World War II, General Douglas MacArthur, a military advisor in the Philippines, was forced to leave because of advancing Japanese troops. He vowed his return. Allied progress in the South Pacific was slow and costly. Japanese soldiers were committed to fighting to the death. U.S. Marines would take the Tarawa Atoll in 1943. In 1944, they took the island of Peleliu, a brutal battle for an island with no strategic value. Marines won another month-long brutal battle on the volcanic island of Iwo Jima. By late 1944, MacArthur and his troops would invade the Philippine island of Leyte, making good on his promise.