Battle of Lalas
1821 CE.
Shown on the map at 37.710°, 21.720°.
The Battle of Lalas would prove to be one of the first major skirmishes between the Greek rebels and the Ottoman forces during the Greek War of Independence. The outcome of the battle lay the foundation for the struggle against Ottoman rule in the Peloponnese.
Text from the Wikipedia article Battle of Lalas, licensed CC BY-SA 4.0.