Complex sentence: During the Second Punic War (218--202 BC), the Veneti even sent a contingent of soldiers to fight alongside the Romans against Hannibal and the invading Carthaginians and Venetians were among those slaughtered at the Battle of Cannae (216 BC).
Split into simpler sentences: During the Second Punic War (218--202 BC), the Veneti even sent a contingent of soldiers to fight alongside the Romans against Hannibal and the invading Carthaginians. These Venetians were among those slaughtered at the Battle of Cannae (216 BC).