Hyman Rickover (1900-1986) was an Admiral in the US Navy and the original developer of nuclear propulsion. He served for a total of 63 years on active duty, making him the longest-serving naval officer.
Dietrick Bonhoeffer (1906-1945) was a German pastor, theologian and anti-Nazi dissident. He was opposed to Hitler’s genocide of the Jews, and ran “underground seminaries” during the war. In 1943 he was imprisoned by the Gestapo. Bonhoeffer was executed in the spring of 1945.