Siege of Pilsen
1618 CE.
Shown on the map at 49.741°, 13.383°.
The Siege of Pilsen, 19 September to 21 November 1618, was the first significant action of the Thirty Years' War. Following the Bohemian Revolt, a Bohemian army under Ernst von Mansfeld captured Plzeň.
Text from the Wikipedia article Siege of Pilsen, licensed CC BY-SA 4.0.