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.
Operation FS Operation FS was the name of the Imperial Japanese plan to invade and occupy Fiji, Samoa, and New Caledonia in the south Pacific during the Pacific conflict of World War II. The operation was set to be executed in July or August 1942 following the "MO", "RY", and "MI" (Battle of Midway) operations.