Operation Rimau (“tiger” in Malay) was the second Allied commando attack that targeted Japanese ships in Keppel Harbour. It took place from late September to early October 1944 during the Second World War. Unlike the first attack (Operation Jaywick on 26 to 27 September 1943), Operation Rimau failed as the commandos were spotted by the Japanese. Thirteen of them were killed in action and 10 others were captured, tried without defence and beheaded near Dover and Clementi Roads.