What was the codename for the British plan to retake Singapore after Japan’s 1945 surrender?

Operation Tiderace was the British plan to retake Singapore after Japan’s 1945 surrender.

The operation was led by Lord Louis Mountbatten, Supreme Allied Commander of Southeast Asia Command. British forces sailed toward Singapore after Japan announced its surrender, expecting the Japanese garrison to comply rather than fight a new battle. The operation began in coordination with Operation Zipper, the planned liberation of Malaya.

Allied forces reached Singapore in early September. The formal surrender of Japanese forces in Southeast Asia was completed on September 12, 1945, at Singapore City Hall. General Seishirō Itagaki signed for the Japanese forces on behalf of Field Marshal Hisaichi Terauchi, while Mountbatten accepted the surrender for the Allies.

Operation Tiderace is distinct from Operation Jurist, which involved the reoccupation of Penang, and Operation Zipper, which concerned Malaya. The peaceful outcome in Singapore reflected the wider collapse of Japan’s wartime empire after the emperor’s announcement and the formal surrender.