Battle of Mailberg
1082 CE.
Shown on the map at 48.667°, 16.183°.
The Battle of Mailberg took place on 12 May 1082. The opponents were Vratislaus II of Bohemia (Czech: Vratislav II.) and Leopold II, Margrave of Austria (German: Luitpold II).
Text from the Wikipedia article Battle of Mailberg, licensed CC BY-SA 4.0.