found: His Die Minensuchwaffe im Kampf gegen Polen 1939 ... 1941.
found: "Erleben - Lernen - Weitergeben":p.19 (Friedrich Oskar Ruge, born 24 Dec. 1894 in Leipzig) p. 535 (died 1985)
found: Friedrich Oskar Ruge, 2021:title page (Friedrich Oskar Ruge)
found: Wikipedia, viewed March 24, 2022:Friedrich Ruge page (Friedrich Oskar Ruge; 24 December 1894 - 3 July 1985, was an officer in the German Navy and recipient of the Knight's Cross of the Iron Cross of Nazi Germany. He served as the first commander of the post-war German Navy)