The Battle of Grunwald / Walka 600-lecia- Bitwa pod Grunwaldem - Słowianie - Bagiński
The Battle of Grunwald or 1st Battle of Tannenberg was fought on July 15, 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