Let's go to the Thought Bubble. After a year as consul that included getting the senate to pass laws largely because of intimidation by Pompey's troops, Caesar landed the governorship of Gaul, at least the southern part of Gaul that Rome controlled. He quickly conquered the rest of Gaul and his four loyal armies, or legions as the Romans called them, became his source of power. Caesar continued his conquests, invading Britain and waging another successful war against the Gauls. While he was away, Crassus died in battle with the Parthians, and Pompey, who had become Caesar's rival and enemy, was elected consul. Pompey and the senate decided to try to strip Caesar of his command and recall him to Rome. If he returned to Rome without an army, Caesar would have been prosecuted for corrupt consuling and also probably exceeding his authority as governor.