Siege of Cyzicus
72 BCE.
Shown on the map at 40.400°, 27.800°.
The siege of Cyzicus took place in 73 BC between the armies of Mithridates VI of Pontus and the Roman-allied citizens of Cyzicus in Mysia and Roman Republican forces under Lucius Licinius Lucullus. It was in fact a siege and a counter-siege. It ended in a decisive Roman victory.
Text from the Wikipedia article Siege of Cyzicus, licensed CC BY-SA 4.0.