| 01.05.1941-29.06.1941 | zur Verfügung U-Boot-Waffe / BdU Org., U.W.O-Lehrgang 1. Unterseeboots-Lehr-Division, Pillau. (was attached to the U-Boat service. U-Boat Training Course in the 1st U-Boat Training Division, Pillau.) |
| 30.06.1941-27.07.1941 | U.W.O-Lehrgang Marinenachrichtenschule, Flensburg-Mürwik. (Communications Training in the Naval Signals School, Flensburg-Mürwik.) |
| 28.07.1941-21.09.1941 | U.T.O-Lehrgang Torpedoschule, Flensburg-Mürwik. (Torpedos Training Course in the Torpedo School, Flensburg-Mürwik.) |
| 22.09.1941-19.10.1941 | U.W.O-Artillerielehrgang Schiffsartillerieschule, Kiel-Wik. (Artillery Training in the Naval Artillery School, Kiel-Wik.) |
| 20.10.1941-11.01.1942 | U.W.O-Lehrgang 2. U.L.D., Gotenhafen. (U-Boat Training in the 2nd U-Boat Training Division, Gotenhafen.) |
| 12.01.1942-27.01.1943 | 2. WO auf 'U 440' [Kdt: Geißler] / 5. U-Flottille, Kiel später 1. U-Flottille, Brest. Drei Feindfahrten, 93 Seetage. (Second Watch Officer. Three war patrols, 93 days at sea.) |
| 27.01.1943-15.07.1943 | WO 1. U-Flottille, Brest. (Watch Officer in the 1st U-Flottille, Brest.) |
| 16.07.1943-13.08.1943 | KSL 52 24. U-Flottille, Memel. (U-Boat Qualifying Course for Commanding Officer.) |
| __.08.1943-07.10.1943 | Baubelehrungskommandant für den 'U 237' Friedrich Krupp Germaniawerft AG, Kiel-Gaarden / Baubelehrung U-Boote Ostsee, Kiel Gaarden. Der Unterricht in der Endphase des Wiederaufbaus in Werft. (Instruction in the final stage of reconstruction in shipyard, after the boat was sunk during a air attack on Kiel and it was raised.) |
| 08.10.1943-08.09.1944 | Kommandant auf 'U 237' / 23. U-Flottille, Danzig. Boote für Kommandantenschießlehrgang. (Commander. Boat for training future U-boat commanders in torpedo firing practice. Oblt.z.S. Lothar König was relieved by Oblt.z.S. Johannes van Stipriaan.) |
| 09.09.1944-__.03.1945 | Kommandant zur Verfügung in der 23. U-Flottille, Danzig. (U-Commander attached to the 23rd U-Flotilla, Danzig.) |
| __.03.1945-09.05.1945 | Kompanieoffizier 3. Unterseeboots-Lehr-Division, Neustadt i. H. (Company Officer in the 3rd U-Boat Training Division.) |