The Battle of Grunwald, fought on July 15, 1410, was a significant conflict during the Polish-Lithuanian-Teutonic War. It involved the forces of the Kingdom of Poland and the Grand Duchy of Lithuania against the Teutonic Knights, a powerful military order. The battle took place near the village of Grunwald in present-day Poland and is considered one of the largest battles in medieval Europe. The Polish-Lithuanian alliance, led by King Władysław II Jagiełło and Grand Duke Vytautas, achieved a decisive victory over the Teutonic Knights, significantly weakening their influence in the region. This battle marked a turning point in the struggle for dominance in Eastern Europe and is celebrated as a symbol of national pride in both Poland and Lithuania.