Political map of Northern Africa 20 December 69 AD (Year of Four Emperors): Galba was Roman Emperor for just half a year before he was overthrown by Otho in early 69 AD—the infamous Year of Four Emperors. After Otho was defeated by Vitellius, the general Vespasian, on campaign in Judea (Great Jewish Revolt), announced his bid for the throne. Temporarily ruling from Egypt, Vespasian defeated Vitellius in December.