High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! German submarine U-124 was a Type IXB U-boat of the German Kriegsmarine that operated during World War II. U-124 was launched on 9 March 1940 with a crew of 54, under the command of Georg-Wilhelm Schulz up until September 1941, when Johann Mohr took over command. U-124 left Wilhelmshaven on her first active patrol on 19 August 1940.