This political biography focuses on the long-neglected career of Julius Curtius, German Foreign Minister from 1929 to 1932. Curtius was a key participant in the development of the German Republic’s post-World War I revisionist foreign policy toward France, Poland, Austria, and the League of Nations. Drawing upon Curtius’ background as a supporter of German nationalist aims, Faithful to the Fatherland, the first study to directly address Curtius’ policies, offers new evidence for continuity in German diplomacy from the Weimar era to the Third Reich.