Battle of the Baetis River

The Battle of the Baetis River was fought between an army of the Roman Republic and a rebel army at the Baetis river (modern day Guadalquivir) in Spain. The battle took place in 80 BC at the start of the Sertorian War. The Romans were led by Lucius Fufidius, while the rebels were led by the Roman rebel Quintus Sertorius. The rebel army was victorious, gaining Sertorius control over Hispania Ulterior.

Background

In 82 BC, during

Prelude

Sertorius made a camp on a mountain near Baelo and started gathering his forces. He had brought 2,600 Romans soldiers (mainly veterans from the Social and Civil War) and 700 North African adventurers and mercenaries. The Lusitanians sent him 4,700 of their warriors. Added to this were an unknown number of disaffected local Romans, Turdetani, Celtiberians, and Roman and Italian refugees. All in all, Sertorius had an army of over 8,000 men.[1] It fell to Fufidius, the aforementioned governor of Hispania Ulterior, to do something about the rebels in his province. So he marched his army, which was already assembled for the invasion of Lusitania, toward Baelo. Sertorius was an active commander and decided not to wait for Fufidius, but marched his little army east. The two forces met at the estuary of the Baetis River.^[2]

Battle

The Baetis estuary was a swampy maze which favoured those with local knowledge. As a number of Sertorius' men were locals, he had the upper hand. The only fragmentary description we have is from Sallust:

Afterwards, Fufidius arrived with his legions. He discovered that the banks of the river were steep, and if they had to fight, the ford would be hard to get across. Everything favoured his enemies more than his own side^[6]

Fufidius lost two thousand men, and the greater part of further Hispania along with them. He survived the battle, but vanished into obscurity, remembered mainly as the man who had lost Hispania to Sertorius.^[2]

Aftermath

Sertorius' victory marked the start of Sertorian war which would ravage the

for the next eight years. He would outgeneral every Republican commander sent against him and destroyed several of their armies. At the height of his power Sertorius ruled almost all of the Iberian peninsula. The war would only come to an end when a number of Sertorius' own men became disgruntled, conspired against him and assassinated him during a banquet.

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