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, commanded by Grand Master Ulrich von Jungingen. This battle marked a turning point in the struggle for dominance in the region, leading to the decline of the Teutonic Order's power and the rise of Polish and Lithuanian influence in Eastern Europe.