The Battle of Cissa was part of the Second Punic War. It was fought in the fall of 218 BC south of the Greek 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 the Romans ever fought in Iberia.