The article describes the life and political career of Paul Freiherr von Eltz-Rübenach, a technocrat, Catholic, and politician in Hitler's cabinet. Eltz was the only minister who resigned from his position without external pressure and did so in a scandalous manner. The article emphasizes that Eltz was an expert in the government, which consisted of non-political professionals. Eltz agreed to Hitler's legislative initiatives and thus contributed to the legitimization of the Nazis. The article also describes the conflicts Eltz faced, particularly regarding Hitler's plans in the automotive sector, which contradicted the interests of the Reichsbahn. The article describes the role of Franz von Eltz-Rübenach, a German politician, during the time of National Socialism. Eltz-Rübenach was the Minister of Transport and Postal Services in the Nazi regime and had an ambivalent relationship with Hitler and the regime. Although he did not play a leading role in the dismissal of Jewish employees, he advocated for the protection of the Catholic Church and opposed a law on compulsory membership in the Hitler Youth. He eventually resigned when he realized that Hitler would not change his anti-Catholic course. The study shows that even a member of the German nobility like Eltz-Rübenach could support the Nazi regime as long as it protected his own priorities. [Extracted from the article]