In 66, Zealot Jews killed the Roman garrison in Jerusalem. After the ignominious defeat of the legatus of Syria in 66, T. Flavius Vespasianus entered in Iudaea in 67 with the legions V "Macedonica", X "Fretensis", XV "Apollinaris", one vexillatio of 1,000 legionaries of the XXII, and 15,000 soldiers from the Eastern allies, and started the siege of Jerusalem in 69, which would be completed by his son T. Flavius Vespasianus (better known as Titus) in 70. In fact in 69, the "year of the four emperors", Flavius Vespasianus senior returned to Italy to conquer the imperial throne after Galba's rebellion and Nero's death. The Twenty-second sided with Flavius Vespasianus, who eventually became emperor.