Battle of Karpenisi
1823 CE.
Shown on the map at 39.056°, 21.572°.
The Battle of Karpenisi took place near the town of Karpenisi (in Evrytania, central Greece) on the night of 21 August 1823, between units of the Greek revolutionary army and Ottoman troops.
Text from the Wikipedia article Battle of Karpenisi, licensed CC BY-SA 4.0.