The Lusitani revolted again in 146 BC under a new leader called Viriathus, invading Turdetania (southern Iberia) in a guerrilla war. The Lusitanians were initially successful, defeating a Roman army at the Battle of Tribola and going on to sack nearby Carpetania, and then besting a second Roman army at the First Battle of Mount Venus in 146 BC, again going on to sack another nearby city. In 144 BC, the general Quintus Fabius Maximus Aemilianus campaigned successfully against the Lusitani, but failed in his attempts to arrest Viriathus.