War with Pompey
Although Caesar daughter, Julia was married to Pompey friction between the two great leaders developed. This friction was encouraged by Crassus. The death of Julia in 54 BC, the death of Crassus in 53 BC, and the success of Caesar in Gaul destroyed the two mens relationship. In 52 BC Pompey was made sole consul. In 50 BC Pompey joined with Caesar's opponents for a bid for a second consulate and also ordered Caesar to disassemble his army. Instead, Caesar crossed the Rubicon into Italy and fought against Rome, creating yet another civil war. In many battles he defeated Pompey which caused Pompey to flee to the east. Caesar secured Spain and then fought Pompey in Greece, defeating him at Pharsalus. Pompey escaped with remnants of his army, he escaped to Egypt. He was murdered. Caesar followed Pompey to Egypt and soon made civil war there. Caesar made Cleopatra his mistress and made her the queen of Egypt.
Caesar lead many campaigns, winning victories all over the Roman Empire. At one of his victories occasioned Caesar's famous boast Veni, vidi, vici ("I came, I saw, I conquered").