During the invasion of the Philippines in December 1941, the Japanese Japanese Fourteenth Area Army headed by MGen. Masaharu Homma, and the Imperial Japanese Navy's 3rd Fleet swept through Luzon and the United States Army Forces in the Far East headed by Gen. Douglas MacArthur was ordered to fall back to Bataan and Corregidor Island under the War Plan Orange - where Manila Bay will be denied for use by the Japanese Navy. The defenders put up a stubborn resistance against the invaders in what is known as the Battle of Bataan, and delayed the timetable of the Japanese expansion into Southeast Asia and Australia. However, after five months of fighting with limited supplies, food, and medicine, the forces in Bataan headed by MGen. Edward P. King surrendered on April 9, 1945 to Gen. Homma, making this the largest capitulation of the United States Army. King surrendered about 80,000 Americans and Filipinos, and the Japanese committed them to what is now known as the Bataan Death March, where an estimate of 15,000 died from heat, exhaustion, or summary execution. The following day, units of the Japanese Army committed the Pantingan River Massacre, where 600 officers of the Philippine Army's 91st Infantry Division were summarily executed with the use of swords. For those who reached Tarlac POW Concentration Camp at Camp O'Donnell, the suffering from malnutrition and disease took a toll of another 20,000 of the captive Prisoner of War.