Hasdrubal Gisco
After the Carthaginian defeat at the Battle of Ilipa, the Turdetani flocked en masse to the Roman banner. Hasdrubal Gisco and Mago Barca were thereafter confined with their troops to Gadir where they were protected from a Roman assault. After the Revolt of Sucro and the Revolt of Indibilis and Mandonius, Publius Cornelius Scipio Africanus sent Lucius Marcius Septimus with a small force uninhibited by baggage so as to augment their speed down the Guadalquivir River to the river mouth. There, the Romans encountered the Carthaginian prefect Hanno who was attempting to recruit a force of Celtiberian mercenaries for Mago Barca, as Mago and Hanno the Elder had just lost another army in Celtiberia to Marcus Junius Silanus.