Wehrpass and Arbeitsbuch for Kriegsmarine man. I am not great at reading these but it looks like his military service started in Augsburg in September 1937. Before and after this he worked for Keller & Knappich in Augsburg. This company, know as KUKA, is still active and makes industrial robotics. They are listed at the time as "maschinenfabrik" so he was probably involved in manufacturing of naval hardware during the war. Included is his release form from this company in 1955. It seems he found something that worked for him and stuck with it for his whole working career. Unfortunately the first page of his wehrpass (With his photo) is missing but the lot is priced accordingly.