Hannibal was a Carthaginian general and statesman who commanded Carthage's main forces against the Roman Republic during the Second Punic War. He is widely considered one of the greatest military commanders in human history. His father, Hamilcar Barca, was a leading Carthaginian commander during the First Punic War. His younger brothers were Mago and Hasdrubal, and he was brother-in-law to Hasdrubal the Fair, who also commanded Carthaginian armies.