Political map of South & Southwest Asia 5 April 1942 (Indian Ocean Raid): The first three months of 1942 had seen the almost total defeat of the Allies in Southeast Asia, with Japan conquering Malaya and Singapore, southern Burma (Japanese conquest of Burma), and the Dutch East Indies. In an attempt to destroy the last British naval presence in the region, the Japanese launched a carrier force into the Indian Ocean (Indian Ocean raid). However, despite raiding the naval base of Colombo and destroying a number of ships, the Japanese failed to catch the main British force before it moved out of range.