Battle of Immae
272 CE.
Shown on the map at 36.238°, 36.569°.
The Battle of Immae was fought in 272 between the Roman army of Emperor Aurelian, and the armies of the Palmyrene Empire, whose leader, Empress Zenobia, had usurped Roman control over the eastern provinces.
Text from the Wikipedia article Battle of Immae, licensed CC BY-SA 4.0.