Battle of White Mountain
1620 CE.
Shown on the map at 50.078°, 14.319°.
The Battle of White Mountain was fought on 8 November 1620 outside Prague in the early stages of the Thirty Years' War. An army backing Frederick V led by Christian of Anhalt was defeated by forces supporting his rival Ferdinand II, Holy Roman Emperor, under Bucquoy and Count Tilly. Imperial forces entered Prague on 9 November and Frederick fled into Silesia.
Text from the Wikipedia article Battle of White Mountain, licensed CC BY-SA 4.0.