Battle of Gergovia

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Battle of Gergovia
Part of the Gallic Wars
Plateau of Gergovia.jpg
Ancient Gergovia was located on the plateau in the background. The main battlefield was the area in the image's center right
Date September 52 BC[citation needed]
Location Gergovia,
Result Gallic victory
Roman Republic Gallic tribes
Commanders and leaders
Gaius Julius Caesar Vercingetorix
25,000[citation needed] 30,000[citation needed]
Casualties and losses
7,400[citation needed] 3,000[citation needed]

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. The Gauls won the battle.

The site is identified with Merdogne, now called 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.


As with much of the early history of Gaul, our knowledge of the war comes principally from Julius Caesar's Commentaries on the Gallic War. As there are no surviving Gaulish accounts, our view of the battle may be coloured by Roman propaganda.

Vercingetorix had earlier been expelled from Gergovia.[1][unreliable source?] In winter 53 BC, whilst Caesar was gathering his forces for a strike against the Gauls, Vercingetorix attacked Gergovia.[2][unreliable source?] Caesar states that this left him with a difficult decision, between keeping his forces safe over the winter but showing Roman weakness in defending her allies the Aedui and thus losing their support, or bringing Vercingetorix to open battle but risking running out of supplies - he chose the latter.[3][unreliable source?]

Leaving two legions and all his baggage train behind in Agedincum, Caesar led the remaining legions to Gergovia's aid. His sieges of Vellaunodunum, Genabum and Noviodunum en route caused Vercingetorix to lift his siege and march to meet Caesar in open battle at Noviodunum, which Caesar won.[4][unreliable source?] Caesar then besieged and captured Avaricum and resupplied there.

Caesar then set out in the direction of Gergovia, which Vercingetorix was probably able to guess once he had divined his direction. The heights of Gergovia itself stand twelve hundred feet above the plain that they overlook. It is a plateau that is a mile and a half long by a third of a mile wide. It was an advantageous place to hold, as there was only one way in, and a small body of troops could hold the entrance to the place. It was a reasonably easy guess to make.[5]

Vercingetorix therefore crossed the river Elave, and started marching up and down the bank, mirroring Caesar's movements and destroying all the bridges to keep him from crossing, the purpose presumably being to destroy part of his force as he attempted to cross. Realizing Vercingetorix's plan, Caesar resolved to trick him and cross under his very nose.[6]

Caesar one night camped near the town of Varennes,[6] where there had previously been a bridge before Vercingetorix had destroyed it. That night, he divided his force into two parts, one part being 2/3rds of the force, the other being 1/3rd of the force. However, the larger force he ordered to march in 6 corps, as if it were in fact the full corps.[6] He then ordered it to continue its march south. Vercingetorix, duped, took the bait and followed this part of the force.

Caesar, with the two legions still present at Varennes, speedily rebuilt the bridge that had been present there. He then sent for the other force, which during that next day stole a march on Vercingetorix, and completed a junction with the original force, and crossed the rebuilt bridge.[6] Realizing that he had been duped, Vercingetorix set out south, to beat Caesar to Gergovia[7]

The battle[edit]

Five days later Caesar reached Gergovia, the first march being short because the majority of the troops were tired after the march they had stolen, and the last march because the legions arrived at the town.[8] Realising its mountainous location made a frontal assault risky, he decided to rely on his superior siege tactics. Upon arriving, Caesar discovered that there was a small hill that the Gauls held that was essential to their holding Gergovia itself. The reasons for this being, that holding this, they were able to get at water, corn and forage.

Caesar took this in a night raid, and swiftly stationed two legions upon this same hill. He then linked it to his main camp, by digging a double trench, twelve feet wide, and a parapet. The result of this was a wall that kept the Gauls from the supplies, which they desperately needed.[9] As a result of this fortification, they were forced to resort to the meager glen that supplied water to Gergovia itself, and this was small.[9]

During the course of this siege, the Aeduan nobles had been 'corrupted' by emissaries of Vercingetorix, with both gold and misleading them about the nature of Caesar's conquests - Caesar would have one believe.[10] Caesar had earlier made an agreement with this tribe, to the effect that ten thousand men would protect his line of supplies. Convictolitavis - who had previously been made chief of this tribe by Caesar - convinced, under whatever pretext by Vercingetorix, ordered these same men under the pretext of joining Caesar, to join Vercingetorix upon their arrival at the oppidum.[10] This same unit of men attacked Romans who were accompanying their train, leaving Caesar in an embarrassing position.

His rations threatened, Caesar took four legions from the siege and surrounded this Aeduan army, and swiftly brought it to terms.[10] Despite the fact that the Aeduan army was brought to terms, large parts of the nation were still revolting. Many Romans were subsequently massacred.[10]

The revolt still going on, Caesar sped to his two legions' aid, which were still left over at Gergovia, and hard pressed to keep Vercingetorix's much larger force at bay.[10]

Caesar then went back to Gergovia and realised that his siege would fail. His only chance now of victory was to get Vercingetorix off the high ground. He used a legion as a decoy and moved onto better ground, capturing three Gallic camps in the process. He then ordered a general retreat to fool Vercingetorix and pull him off the high ground. However, the retreat was not heard by most of Caesar's force. Instead, spurred on by the ease with which they captured the camps, they pressed on toward the town and mounted a direct assault on it. The noise of the assault drew Vercingetorix back into the town. Forty-six centurions and 700 legionaries died in the resulting engagement, and over 6,000 were wounded on the Roman side, compared to the several hundred Gauls killed and wounded. In the wake of the battle, Caesar lifted his siege and advanced instead into Aedui territory.



Coordinates: 45°42′30″N 3°7′30″E﻿ / ﻿45.70833°N 3.12500°E﻿ / 45.70833; 3.12500