Which event took place first, Operation Undertone or the Battle of Leyte?
Battle of Leyte The Battle of Leyte in the Pacific campaign of World War II was the amphibious invasion of the Gulf of Leyte in the Philippines by American forces and Filipino guerrillas under the command of General Douglas MacArthur, who fought against the Imperial Japanese Army in the Philippines led by General Tomoyuki Yamashita from 17 October - 26 December 1944. The operation code named "King Two" launched the Philippines campaign of 1944–45 for the recapture and liberation of the entire Philippine Archipelago and to end almost three years of Japanese occupation.
Battle of Sarimbun Beach The Battle of Sarimbun Beach was the first stage of the Japanese assault on Singapore in February 1942 during World War II. Sarimbun Beach, in the west of Singapore Island, was the area in which Japanese troops, under the overall direction of Lieutenant General Tomoyuki Yamashita, first attacked Allied forces. The commander of Allied forces in Singapore, Lieutenant General Arthur Percival, did not expect the Japanese to make their main attack in the west, and failed to reinforce the Australian 22nd Brigade, which took the brunt of the assault. The main Japanese objective to the immediate rear of Sarimbun Beach was Tengah Airfield.