 Since his successor was late, Flaccus started a third campaign against the Celtiberians who had not surrendered, ravaging the more distant parts of Celtiberia.The Celtiberians responded by secretly gathering an army to strike at the Manlian Pass, through which the Romans would have needed to pass.However, Gracchus told his colleague, Lucius Postumius, to inform Flaccus that he had nearly arrived from Rome, and that Flaccus was to bring his army to Tarraco (Tarragona), where Gracchus would disband the old army and incorporate the new troops.