Battle of Ilerda
48 BCE.
Shown on the map at 41.367°, -0.500°.
The Battle of Ilerda took place in June 49 BC between the forces of Julius Caesar and the Hispanian army of Pompey Magnus, led by his legates Lucius Afranius and Marcus Petreius. Unlike many of the other battles of the civil war, this was more a campaign of manoeuvre than actual fighting. It allowed Caesar to eliminate the threat of Pompey's forces in Hispania and face Pompey himself in Greece at the Battle of Pharsalus (48 BC).
Text from the Wikipedia article Battle of Ilerda, licensed CC BY-SA 4.0.