Hispania Baetica
He was "quaestor" of Hispania Baetica (southern Iberia) in AD 68. On the death of Nero, he attached himself to Galba, who appointed him to the command of Legio IV Macedonica at Mogontiacum in Germania Superior (Upper Germany). Having been prosecuted for embezzling public money, Caecina went over to Vitellius, who sent him with a large army into Italy.