Homma moved to occupy Manila, giving the Allies time to set up some sort of defensive line. Roosevelt could see that the Philippines could not hold, because there was no relief available. MacArthur was ordered to evacuate to Australia in March; he left via PT boat, creating a romantic myth about the plywood craft, to a remote airfield and flew to Darwin. Upon arrival, he remarked to reporters "I shall return," which became his battle cry.
Homma surrounded US Army General Jonathan Wainwright and 100,000 Americans and Filipinos on Bataan and Corrigedor. They were able to hold out until May 7, 1942, when Wainwright tried to separate his command so that his Southern subordinate, Army General King, could continue resistance. Homma insisted on complete surrender, and Wainwright decided he had no choice. Via radio, he ordered all Allied troops to surrender on May 8. Some Americans and Filipinos retreated into the mountains to begin the kind of warfare that was so infuriating to the Spanish and Americans during their colonial occupations.
King complied, but he had little fight to offer anyway. He was surrounded and continued resistance would have resulted in thousands of deaths. However, thousands died anyway. King’s and Wainwright’s forces were marched several miles in four columns to Camp O’Donnell, which the Japanese were using as a POW camp. 3,000 Americans and 10,000 Filipinos died within days, and thousands more died during the course of their captivity.
Parts of the Philippines were occupied until the end of the war, but their liberation began in October 1944. During that time, the Japanese hoped to incorporate the Philippines into the Greater East Asia Co-Prosperity Sphere, but the harsh treatment of Filipino civilians resulted in a sustained and growing guerilla war.
Some of the Americans held by the Japanese were shipped to work camps around the Empire in unmarked ships, nicknamed "Hell Ships" by their captives. They were overcrowded and underfed, and the unmarked ships were torpedoed by US submarines. Those that did reach Japan, Korea and Manchuria were put to work in impossible conditions, in collapsing mines and dangerous construction.