Hellenistic period Balkans, Philip allied himself with Carthage after Hannibal had dealt the Romans a massive defeat at the Battle of Cannae (216 BC) during the Second Punic War. Forcing the Romans to fight on another front when they were at a nadir of manpower gained Philip the lasting enmity of the Romans—the only real result from the somewhat insubstantial First Macedonian War (215–202 BC). Once the Second Punic War had been resolved, and the Romans had begun to regather their strength, they looked to re-assert their influence in the Balkans, and to curb the expansion of Philip. A pretext for war
Battle of the Bagradas River (255 BC) Battle of the Bagradas River (255 BC) The Battle of the Bagradas River (the ancient name of the Medjerda), also known as the Battle of Tunis, was a Carthaginian victory over Rome in the spring of 255 BC during the First Punic War. The greatly superior cavalry of the Carthaginians and their allies permitted a pincer attack on the Roman infantrymen, provoking a rout and slaughter. The mercenary Spartan general Xanthippus was hired by the city of Carthage following heavy-handed negotiations by Rome. He made the Romans fight on open ground, which allowed him to maximise the effect of the