Battle of Kock
1809 CE.
Shown on the map at 51.650°, 22.450°.
The Battle of Kock was fought in 1809 during the Napoleonic Wars, near the town of Kock in Poland. The battle saw the death of Polish Army colonel Berek Joselewicz, fighting against the Austrian Empire for the freedom of Poland.
Text from the Wikipedia article Battle of Kock (1809), licensed CC BY-SA 4.0.