Battle of Racibórz
1241 CE.
Shown on the map at 50.083°, 18.217°.
The Battle of Raciborz took place in the Polish town of Raciborz, on 20 March 1241, during the Mongol invasion of Poland. It ended in the victory of a Polish army from Silesia, commanded by Duke of Opole and Raciborz, Mieszko II the Fat.
Text from the Wikipedia article Battle of Racibórz, licensed CC BY-SA 4.0.