Der Aufstieg der Habsburger. Die Schlacht am Marchfeld: It was the battle that decided the future of Europe: on August 26, 1278, two dynasties faced each other at Marchfeld. On one side was the Roman-German King Rudolf I from the House of Habsburg, on the other Ottokar II from the Bohemian Přemyslid dynasty. Rudolf's victory over Ottokar laid the foundations for the unprecedented rise of the Habsburg Empire, which was to play a decisive role in Europe for more than six centuries.