| 04.04.1940-31.05.1940 | zur Verfügung U-Boot-Waffe / Befehlshaber der U-Boote Org., U-Bootsausbildung Unterseebootsschule, Neustadt in Holstein. . Unterseebootsschule, Pillau. (was attached to the U-Boat service. U-Boat Training in the U-Boat School, Neustadt.) |
| 03.06.1940-29.06.1940 | U.W.O-Artillerielehrgang Schiffsartillerieschule, Kiel-Wik. (Artillery Training in the Naval Artillery School, Kiel-Wik.) |
| 01.07.1940-31.07.1940 | U.T.O-Lehrgang Torpedoschule, Flensburg-Mürwik. (Torpedos Training Course in the Torpedo School, Flensburg-Mürwik.) |
| 01.08.1940-13.08.1940 | U.W.O-Sperrlehrgang Sperrschule, Kiel-Wik. (Mining Course in the Mine Warfare School, Kiel-Wik.) |
| 14.08.1940-20.08.1940 | Baubelehrung für den 'U 141' Deutsche Werke AG, Kiel-Gaarden / Baubelehrung U-Boote Ostsee, Kiel-Gaarden. (Instruction in the final stage of construction in shipyard under supervision of Construction Instruction Unit for U-Boats Baltic Sea, Kiel.) |
| 21.08.1940-21.10.1940 | WO auf 'U 141' [Kdt: Schultze] / 1. U-Flottille, Kiel. Boot im östlichen Teil der Ostsee für Ausbildung, nachdem sie Indienststellung. (Watch Officer. Boat in eastern part of the Baltic for the usual trials and exercises after it commissioned.) |
| 22.10.1940-24.11.1940 | zur Verfügung 1. Unterseebootsausbildungsabteilung, Plön i. H. (was attached to the 1st U-Boat Training Unit, Plön.) |
| 25.11.1940-13.02.1941 | 1. WO 24. U-Flottille, Memel. (First Watch Officer in the 24th U-Flotilla, Memel.) |
| 14.02.1941-30.04.1941 | Adjutant am 1. U-Flottille, Brest. (ADC in the 1st U-Flotilla, Brest.) |
| 01.05.1941-14.07.1941 | Adjutant 3. U-Flottille, La Pallice. (Aide de Camp in the 3rd U-Flotilla, La Pallice.) |
| 15.07.1941-12.09.1941 | Adjutant in der 5. U-Flottille, Kiel. (ADC in the 5th U-Flotilla, Kiel.) |
| 13.09.1941-__.01.1942 | WO-überzählig auf 'U 129' [Kdt: Clausen] / 2. U-Flottille, Lorient. Zwei Feindfahrten, 81 Seetage. (Supernumerary Watch Officer. Two war patrols, 81 days at sea.) |
| __.01.1942-05.05.1942 | 1. WO auf 'U 129' [Kdt: Clausen] / 2. U-Flottille, Lorient. Ein Feindfahrt in der Karibik, 71 Tage auf See. (First Watch Officer. Completed one war patrol in the Caribbean, 71 days at sea.) |
| 06.05.1942-25.06.1942 | KSL 24. U-Flottille, Memel. (U-Boat Commander Torpedo Shooting Course.) |
| 26.06.1942-04.08.1942 | Baubelehrungskommandant für den 'U 188' Deutsche Schiff- und Maschinenbau AG [A.G. Weser], Bremen / 6. K.L.A., Bremen. (Instruction in the final stage of construction in shipyard under supervision of 6th Warships Training Unit for U-Boats, Bremen.) |
| 05.08.1942-20.08.1944 | Kommandant auf 'U 188' / 4. U-Flottille, Stettin später 10. U-Flottille, Lorient. Drei Feindfahrten, 356 Seetage. Boot wurde im Bordeaux in Position 44°52' N x 00°34' W, Planquadrat BG 5174 gerannt, weil nicht in der Zeit, dem verbündeten Fortschritt zu entgehen seetauglich war. 1 Zerstörer 1.190 ts. versenkt, 1 Passagierdampferschiff 5.427 BRT versenkt, 7 Dampffrachtschiffe 44.298 BRT versenkte und 1 Motortanker 9.977 BRT beschädigt. (Commander. Completed three war patrols, 356 days at sea. The U 188, on the road back to Lorient during the first patrol was attacked with bombs by a British Whitley aircraft from No. 612 Sqdn RAF in the Bay of Biscay, Gunfire wounded the Kptlt. Siegfried Lüdden and Matrosengefreiter Leo Rupp who later died in a hospital. Sunk 1 destroyer 1.190 Dton, sunk 1 steam passenger ship 5.427 GRT, sunk 7 steam cargo ships 44.298 GRT and damaged 1 motor tanker 9.977 GRT. The boat was scuttled in Bordeaux in position 44°52' N x 00°34' W, [KM naval grid square BG 5174], because was not seaworthy in time to escape the Allied advance.) |
| 26.06.1944-17.07.1944 | Gefangener u. Flucht. (Captured by French Resistance together with Chief Engineer of U 181 Kptlt. Ing. Carl-August Landfermann on the trip from Bordeaux to Paris and at the 26.06.44 through exchange of the prisoners, they were released to report back to German authorities.) |
| 09.09.1944-07.11.1944 | zur Verfügung 1. U.A.A., Plön i. H. (was attached to the 1st U-Boat Training Unit, Plön.) |
| 08.11.1944-13.01.1945 | Admiralstabsoffizier 3. Asto Hauptquartiere von Befehlsstelle des Kommandierender Admiral U-Boote, Kiel. Referat F 3. (3rd Staff Officer, assigned to the Department F 3 to the Headquarters Command of the U-Boats in Kiel.) |
