Battle of Karksi
1600 CE.
Shown on the map at 58.117°, 25.588°.
The Battle of Karksi (also known as Battle of Karkus) was fought during the Polish–Swedish War (1600–1611) between the Polish–Lithuanian Commonwealth and the Kingdom of Sweden on 29 October 1600.
Text from the Wikipedia article Battle of Karksi (1600), licensed CC BY-SA 4.0.