The Imperial Japanese Navy and Imperial Japanese Army inflicted a series of defeats on American and British Empire forces. On the British front (South-East Asian Theatre), the Japanese achieved success. By the third week of January 1942, Hong Kong had been captured by Japanese forces and the British Army was edging towards a disastrous defeat in the Malayan Campaign. In mid-February 1942, the Battle of Singapore ended in the largest surrender of British forces in history. Simultaneously the Japanese invaded Burma and decisively defeated the Royal Navy, during the Indian Ocean Raid in March–April 1942.