Battle on the Marchfeld

A battle fought near Dürnkrut and Jedenspeigen in Lower Austria on 26 August 1278, where Rudolf I’s coalition defeated Ottokar II of Bohemia, who was killed.

Rudolf I of Germany: The first Habsburg king of Germany, elected in 1273 and founder of the dynasty’s royal ascendancy. He commanded the coalition that defeated Ottokar and secured his rule.
Interregnum (Holy Roman Empire): The period from 1254 to 1273 when the Holy Roman Empire lacked a generally recognized emperor. The imperial vacancy enabled Ottokar’s expansion and preceded Rudolf’s election.
House of Habsburg: A European dynasty whose members ruled Austria and, at various times, the Holy Roman Empire and other kingdoms. Rudolf’s victory laid the foundation for Habsburg rule in Austria.
Philip of Sponheim: A medieval nobleman and military leader who served as a commander in Rudolf I’s coalition. His leadership illustrates the coalition’s support beyond Rudolf’s own forces.
Ottokar II of Bohemia: King of Bohemia from 1253 to 1278, whose Central European territories made him one of Europe’s strongest rulers. His defeat and death ended his challenge to Rudolf’s authority.
Election of Rudolf I: The 1273 election by German prince-electors that made Rudolf of Habsburg king of the Romans. Rudolf’s election gave him grounds to demand the return of imperial territories.
Duchy of Styria: A medieval duchy in the southeastern Alps, later incorporated into the Habsburg lands. Rudolf’s settlement after the battle secured Styria for his sons.
Henry XIII, Duke of Bavaria: A Wittelsbach duke of Lower Bavaria who ruled from 1255 to 1290. He allied with Rudolf and contributed troops to the campaign against Ottokar.
Battle of Kressenbrunn: A 1260 battle in which Ottokar II defeated Béla IV of Hungary near the Marchfeld. Ottokar’s earlier victory in the region contrasts with his defeat in 1278.
Duchy of Austria: A medieval duchy centered on the Danube, ruled by the Babenberg dynasty until its extinction in 1246. Ottokar acquired Austria after the Babenberg line ended, prompting Rudolf’s territorial claims.

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Přemyslid dynastyBroader topic: Ottokar's defeat ended the dynasty's bid for dominance across Central Europe.