President of Germany
Friedrich Ebert (SPD) served as Germany's first president, followed by Paul von Hindenburg. The office effectively came to an end upon Hindenburg's death in 1934 and its powers merged with those of chancellor. Adolf Hitler now ruled Germany as "Führer und Reichskanzler", combining his previous positions in party and government. The office, however, was not abolished and briefly revived at the end of the Second World War when Hitler appointed Grand Admiral Karl Dönitz as his successor as President of Germany. Dönitz agreed to the surrender to the Allies and was arrested a few days later.
Karl Renner
Karl Renner (14 December 1870 – 31 December 1950) was an Austrian politician of the Socialist Party. He is often referred to as the "Father of the Republic" because he led the first government of German-Austria and the First Austrian Republic in 1919 and 1920, and was once again decisive in establishing the present Second Republic after the fall of Nazi Germany in 1945, becoming its first President after World War II (and fourth overall).