Oflag: лагерь военнопленных офицеров. Вот здесь за 500руб., отдают(но сохран хуже) http://molotok.ru/item778517102_zheton_oflag_iii_rejh.html
July 1941 a new compound Oflag XIII-D was set up for higher ranking Soviet officers captured during Operation Barbarossa. It was closed April 1942. The surviving officers (many had died during the winter due to an epidemic) were transferred to other camps.