The Battle of Cissa was part of the Second Punic War. It was fought in the fall of 218 BC, near the town of Tarraco in north-eastern Iberia. A Roman army under Gnaeus Cornelius Scipio Calvus defeated an outnumbered Carthaginian army under Hanno, thus gaining control of the territory north of the Ebro River that Hannibal had just subdued a few months prior in the summer of 218 BC. This was the first battle that the Romans had ever fought in Iberia. It allowed the Romans to establish a secure base among friendly Iberian tribes, and due to the eventual success of the Scipio brothers in Spain, Hannibal looked for but never received reinforcements from Spain during the war.