Oflag X-B
Nienburg/Weser, Germany
Oflag X-B was a World War II German prisoner-of-war camp for officers (Offizierlager) located in Nienburg/Weser, Lower Saxony, in north-western Germany. Adjacent to it was the enlisted men's camp (Stammlager) Stalag X-C.
Prison data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).