Of all Rome's many battles, perhaps the most important was internal. When Julius Caesar went head-to-head with Gnaeus Pompey, the outcome would change the fate of the Western World. Pompey was the champion of the Senate; Caesar the champion of the troops. They pursued one another across all of Europe. Finally, at Pharsalus, the Pompeians were confident of victory. Caesar was on the point of starvation. But strategy, not hunger, would prove decisive.