Battle of Reichenberg
1757 CE.
Shown on the map at 50.767°, 15.056°.
The Battle of Reichenberg took place during the Third Silesian War (part of the Seven Years' War) on 21 April 1757 near the town of Reichenberg (Czech: Liberec) in Bohemia.
Text from the Wikipedia article Battle of Reichenberg, licensed CC BY-SA 4.0.