Marcus Atilius Regulus (consul 227 BC) army of 80,000 Romans and allies was amassed together to smash the Carthaginian army under Hannibal. The historian Polybius records that both he and Servilius died fighting bravely at the Battle of Cannae. However, there was a Marcus Atilius Regulus who was Praetor Urbanus (and later also Peregrinus), but it is thought that this person is actually a textual mis-reading of the name Marcus Aemilius Lepidus. It is unlikely that the aged, former consul would become a Praetor again three years after Cannae. His younger brother Gaius was killed fighting the Gauls at the Battle of Telamon in 225 BC,
Early Middle Ages had broken down, and the Roman army comprised mainly barbarians and soldiers recruited for a single campaign. The general decline in discipline also led to the use of smaller shields and lighter weaponry. Not wanting to share the glory, Eastern Emperor Valens ordered an attack on the Therving infantry under Fritigern without waiting for Western Emperor Gratian, who was on the way with reinforcements. While the Romans were fully engaged, the Greuthung cavalry arrived. Only one-third of the Roman army managed to escape. This represented the most shattering defeat that the Romans had suffered since the Battle of Cannae (216