The Year of the Four Emperors, AD 69, was the first civil war of the Roman Empire, during which four emperors ruled in succession, Galba, Otho, Vitellius, and Vespasian. It is considered an important interval, marking the change from the Julio-Claudians, the first imperial dynasty, to the Flavian dynasty. There were several rebellions and claimants, with shifting allegiances and turmoil in Rome and the provinces.
In 68, Vindex, legate of Gallia Lugdunensis, revolted against Nero and encouraged Galba, governor of Hispania, to claim the Empire. The latter was proclaimed emperor by his legion in early April. He was notably supported by Otho, legate of Lusitania. Soon after, the legate of a legion in Africa, Clodius Macer, also rebelled against Nero. Vindex was defeated by the Rhine legions at the Battle of Vesontio, but they too rebelled against Nero. On 9 June 68, Nero took his own life after being declared a public enemy by the Senate, which made Galba the new emperor. Galba was unable to establish his authority over the Empire, as several of his supporters were disappointed by his lack of gratitude.
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