Battle of Grunwald

The Battle of Grunwald was a battle in the Polish-Lithuanian-Teutonic War. It was fought on July 15, 1410 between the Kingdom of Poland and the Grand Duchy of Lithuania against the Teutonic Order, at Grunwald/Tannenberg, Poland.

Trivia

 * 504 years later, during World War I, the German/Prussian Army avenged the Teutonic Knights' defeat at the Battle of Tannenberg.