The Battle of Grunwald took place on July 15, 1410 between an alliance of the Kingdom of Poland and Lithuania against the Teutonic Order. It was one of the most important battles in Medieval Europe.

3. Events leading to the war - Lithuania

The 14th century Order's attacks were mainly against the pagan Lithuanian State, combining the mission to spread Christianity, and the desire to capture Lithuanian lands, especially the area around Samogitia. The Knights of the Teutonic Order needed reinforcements to fight effectively in this region. Well-armed knights from France, England, Luxembourg, Austria, Hungary, Bohemia and the Low Countries arrived every year to participate in "Lithuanian Crusades". Although these mercenaries were never allowed to become full members of the Teutonic Order, they were granted an honorable affiliation, and fought alongside the Teutonic Knights. For two centuries, the Teutonic Knights attacked, but the Lithuanians resisted hard.

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