Battle of Nicopolis
47 BCE.
Shown on the map at 40.300°, 37.833°.
The Battle of Nicopolis was fought in December 48 BC between the army of Pharnaces II of Pontus, the son of Mithdridates VI Eupator, and a Roman army led by Gnaeus Domitius Calvinus.
Text from the Wikipedia article Battle of Nicopolis (48 BC), licensed CC BY-SA 4.0.