Battle of Gergovia participant Vercingetorix
The Battle of Gergovia took place in 52 BC in Gaul at Gergovia, the chief oppidum (fortified town) of the Arverni. The battle was fought between a Roman Republican army, led by proconsul Julius Caesar, and Gallic forces led by Vercingetorix, who was also the Arverni chieftain. The Romans attempted to besiege Gergovia, but miscommunication ruined the Roman plan.  The Gallic cavalry counterattacked the confused Romans and sent them to flight, winning the battle.
The site is identified with Merdogne, since renamed Gergovie, a village located on a hill within the town of La Roche-Blanche, near Clermont-Ferrand, in south central France. Some walls and earthworks still survive from the pre-Roman Iron Age. The battle is well known in France as an example of a Gallic victory.