Battle of Pločnik
1385 CE.
Shown on the map at 43.202°, 21.356°.
The Battle of Pločnik was fought sometime between 1385 and 1387 near the village of Pločnik (near Prokuplje in today's southeastern Serbia), between the forces of Serbian Prince Lazar Hrebeljanović, and the invading Ottoman Army of Sultan Murad I.
Text from the Wikipedia article Battle of Pločnik, licensed CC BY-SA 4.0.