Battle of Grunwald

The Battle of Grunwald (or Battle of Tannenberg) took place on July 15, 1410 with the Kingdom of Poland and the Grand Duchy of Lithuania ranged against the Knights of the Teutonic Order. It was the decisive engagement in the Polish-Lithuanian-Teutonic War (1409-1411) and one of the greatest battles of medieval Europe.

The battle saw the Monastic State of the Teutonic Knights decisively defeated — and the order never recovered its former power.