Battle of Grunwald

The Battle of Grunwald or 1st Battle of Tannenberg was fought on 15 July 1410, during the Polish–Lithuanian–Teutonic War. The alliance of the Kingdom of Poland and the Grand Duchy of Lithuania, led respectively by King Jogaila (Władysław Jagiełło) and Grand Duke Vytautas (Witold), decisively defeated the Teutonic Knights, led by Grand Master Ulrich von Jungingen. Most of the Teutonic Knights' leadership were killed or taken prisoner.

The battle was one of the largest battles in Medieval Europe and is regarded as the most important victory in the history of Poland and Lithuania. It was surrounded by romantic legends and nationalistic propaganda, becoming a larger symbol of struggle against invaders and a source of national pride.