After a lull in the military operations, owing to civil war and political turmoil in Rome, Vespasian returned to Rome and was accepted as the new Emperor in 69 CE. With Vespasian's departure, Titus besieged the center of rebel resistance in Jerusalem in early 70 CE. While the first two walls of Jerusalem were breached within three weeks, a stubborn stand prevented the Roman Army from breaking the third and thickest wall. Following a brutal seven-month siege, in which Zealot infighting resulted in the burning of the entire food supply of the city to enhance "fighting to the end", the Romans finally succeeded in breaching the weakened Jewish forces in the summer of 70 CE. Following the fall of Jerusalem, Titus left for Rome, while Legion X "Fretensis" defeated the remaining Jewish strongholds later on, finalizing the Roman campaign in Masada in 73/74 CE.