In spite of his indebtedness to Caesar, Lentulus joined the Pompeians on the outbreak of civil war (49).
The Pompeians were punished for this violent outbreak by the prohibition of all theatrical exhibitions for ten years (Tacitus, Ann.
In this case an inscription records the repair and restoration of the edifice after the The interest taken by the Pompeians in the sports of the amphitheatre is shown by the contents of the numerous painted and scratched inscriptions relating to them which have been found in Pompeii - notices of combats, laudatory inscriptions, including even references to the admiration which gladiators won from the fair sex, &c.
Having been joined by his brother Sextus, he collected a considerable army, the numbers of which were increased by the Pompeians who fled from.
From Cyprus, where he had taken refuge, he made his way to Africa, and after the defeat of the Pompeians at Thapsus (46) crossed over to Spain.
After the death of Jugurtha as a captive at Rome in 106, the western part of his dominions was added to those of Bocchus, king of Mauretania, while the remainder (excluding perhaps the territory towards Cyrene) continued to be governed by native princes until the civil war between Caesar and Pompey, in which Juba I., then king of Numidia, who had espoused the cause of the Pompeians, was defeated by Caesar, and put an end to his own life (46 B.C.).
Juba's attention was distracted by a counter invasion of his territories by Bocchus the younger and Sittius; but, finding that his lieutenant Sabura was able to defend his interests, he rejoined the Pompeians with a large force, and shared the defeat at Thapsus.