Complex sentence: The Carthaginians are led by Hannibal's brother Hasdrubal Barca, and the Roman armies are led by the consuls Marcus Livius Salinator and Gaius Claudius Nero.
Split into simpler sentences: The Carthaginians are led by Hannibal's brother Hasdrubal Barca. The Roman armies are led by the consuls Marcus Livius Salinator and Gaius Claudius Nero.