Battle of Šumatovac
1876 CE.
Shown on the map at 43.550°, 21.700°.
The Battle of Šumatovac (Serbian: Bitka na Šumatovcu) or Battle of Aleksinac (Turkish: Aleksinaç Muharebesi) happened in 1876, in central Serbia, near the town of Aleksinac. The outnumbered Serbian army, led by colonel Kosta Protić, won a tactical victory in this defensive battle against the Ottoman forces. In a major tactical blunder the Ottomans spent a whole day frontally attacking a well-entrenched pentagonal redoubt defended by two Serbian battalions armed with muzzle-loading rifles and 6 cannons supported by about 40 additional artillery pieces positioned on the overlooking hills.
Text from the Wikipedia article Battle of Šumatovac, licensed CC BY-SA 4.0.