I'd like to reiterate the statements of the individual above me. Masaesyli and Massylii were both well known for having what was considered to be the best cavalry in the Mediterranean. Not only that, but it was the actions of a the Masaesyli King Masinissa that determined the outcome of the battle of Zama, when he turned from Carthage, drove off their inferior cavalry, and then returned for the slaughter of the then broken Carthaginian core. Numidian Cavalry was feared more by the Romans than any of the other weapons and men of war that Carthage brought to the field. Do it justice, these dudes were essentially north African Mongols.