Following the outbreak of the Second World War, Mountbatten commanded the destroyer and the 5th Destroyer Flotilla and saw considerable action in Norway, the English Channel and the Mediterranean. In August 1941, he received command of the aircraft carrier . He was appointed chief of Combined Operations and a member of the Chiefs of Staff Committee in early 1942, and organised the raids on St Nazaire and Dieppe. In August 1943, Mountbatten became Supreme Allied Commander South East Asia Command and oversaw the recapture of Burma and Singapore from the Japanese by the end of 1945. For his service during the war, Mountbatten was created viscount in 1946 and earl the following year.