Battle of Sarmisegetusa
106 CE.
Shown on the map at 45.622°, 23.309°.
The Battle of Sarmizegetusa (also spelled Sarmizegethuza) was a siege of Sarmizegetusa, the capital of Dacia, fought in Trajan's Second Dacian War in 106 between the army of the Roman Emperor Trajan, and the Dacians led by King Decebalus.
Text from the Wikipedia article Battle of Sarmizegetusa, licensed CC BY-SA 4.0.