Battle of Vercellae (101 BC): Marius Destroys the Cimbri

The Battle of Vercellae was fought on 30 July 101 BC on the Raudine Plain in northern Italy between a Roman army under Gaius Marius and Quintus Lutatius Catulus and the Cimbri, a migrating people from northern Europe. The Romans won an overwhelming victory that ended more than a decade of disasters against the Cimbri and their allies. It confirmed Marius as Rome’s leading man and earned him the title of the city’s third founder.

Background

The Cimbri and Teutones had defeated a series of Roman armies, culminating in the catastrophe of the Battle of Arausio in 105 BC. Rome responded by electing Marius consul year after year from 104 BC, and he used the time to train and reorganise his troops, changes later grouped as the Marian Reforms.

In 102 BC the migrating peoples split up. The Teutones and Ambrones tried to reach Italy along the coast and were destroyed by Marius at Aquae Sextiae (Aix-en-Provence). The Cimbri crossed the Alps further east, probably by the Brenner Pass, and came down into the valley of the Adige.

The consul Quintus Lutatius Catulus, guarding that route, could not hold them. His frightened army retreated south of the Po in the winter of 102/101 BC, leaving the rich plain of northern Italy open.

Before the battle

In 101 BC Marius, consul for the fifth time, joined Catulus, whose command was extended as proconsul. Plutarch gives their forces as 32,000 men under Marius and 20,300 under Catulus. Lucius Cornelius Sulla, Marius’s former quaestor, now served on Catulus’s staff.

The Cimbri, waiting for the Teutones they did not know had been destroyed, sent envoys asking for land for themselves and their kinsmen. Marius mocked them, telling them the Teutones already had land, which they would hold forever. According to Plutarch, the Cimbrian king Boiorix then rode up to the Roman camp and invited Marius to name a day and place for battle; Marius chose the Raudine Plain, three days later.

The battle

The fighting took place on a hot summer morning. Plutarch, who drew on accounts by Catulus and Sulla, says the Romans had the sun and wind in their favour: dust hid the size of the enemy, and the Cimbri, unused to the Italian heat, tired quickly.

The Cimbrian infantry formed a huge square, with their front ranks reportedly chained together to stop them breaking. Their cavalry tried to draw the Romans out with a feigned retreat. Marius’s wing apparently lost its way in the dust, and the heaviest fighting fell on Catulus’s troops in the centre.

The Cimbri were routed. Boiorix was killed fighting. At the wagon laager, Plutarch describes Cimbrian women killing fleeing men and then themselves and their children rather than be taken. Plutarch gives the losses as about 120,000 killed and 60,000 captured; Livy’s summary gives 140,000 and 60,000. Both figures are likely inflated, but the destruction was overwhelming.

Where was the Raudine Plain?

The site of the battle has never been securely identified. Plutarch places it near Vercellae, and most older accounts identify this with Vercelli in Piedmont, west of Milan. That would mean the Cimbri had moved far west across the Po plain after crossing the Adige.

Some historians find this route unlikely and suggest a site in the eastern Po valley, near the Adige or the Po delta, pointing to place names and to the shorter distance from the Brenner. No battlefield archaeology has settled the question, so the location remains a matter of debate.

Who deserved the credit?

A bitter dispute followed. Catulus’s soldiers claimed most of the Cimbrian standards had been captured by them, and Catulus and Sulla both later wrote memoirs, now lost, that stressed their part and played down Marius’s.

Marius, as the senior commander, received most of the public honour. He and Catulus celebrated a joint triumph, and Marius was hailed as the third founder of Rome after Romulus and Camillus. Sulla’s grievance over the credit, added to his earlier role in ending the Jugurthine War, deepened his rivalry with Marius.

Consequences

The victory ended the Cimbrian threat to Italy for good. Tens of thousands of captives were sold as slaves across Italy, adding to the large enslaved workforce on Italian estates.

Marius was elected consul for a sixth time for 100 BC, but his alliance with the violent tribune Saturninus damaged his reputation. His army of long-serving volunteers, however, had shown the military effectiveness that made it a model for later Roman legions.

Timeline

• 105 BC, 6 October: Two Roman armies are destroyed at Arausio.
• 104 BC: Marius begins his run of consecutive consulships.
• 102 BC: Marius destroys the Teutones and Ambrones at Aquae Sextiae.
• 102-101 BC, winter: Catulus retreats as the Cimbri enter northern Italy.
• 101 BC, 30 July: The Cimbri are destroyed on the Raudine Plain.
• 101 BC: Marius and Catulus celebrate a joint triumph.
• 100 BC: Marius holds his sixth consulship.

Why it matters

Vercellae removed the greatest threat to Italy since Hannibal and ended the Cimbrian War. It also made Marius the most powerful man in Rome and showed how a single general’s repeated commands could override the Republic’s limits on power, a pattern later followed by Sulla, Pompey and Caesar.