Mago Barca in the context of "Scipio Africanus"

Hasdrubal Barca (245 – 22 June 207 BC), a latinization of ʿAzrubaʿal (Punic: 𐤏𐤆𐤓𐤁𐤏𐤋, romanized: ʿAzrōbaʿl) son of Hamilcar Barca, was a Carthaginian general in the Second Punic War. He was the brother of Hannibal and Mago Barca.

The Battle of Zama was fought in 202 BC in what is now Tunisia between a Roman army commanded by Scipio Africanus and a Carthaginian army commanded by Hannibal. The battle was part of the Second Punic War and resulted in such a severe defeat for the Carthaginians that they capitulated, while Hannibal was forced into exile. The Roman army of approximately 30,000 men was outnumbered by the Carthaginians who fielded either 40,000 or 50,000; the Romans were stronger in cavalry, but the Carthaginians had 80 war elephants.

At the outset of the Second Punic War, in 218 BC, a Carthaginian army led by Hannibal invaded mainland Italy, where it campaigned for the next 16 years. In 210 BC Scipio took command of the faltering Roman war effort in Iberia (modern Spain and Portugal) and cleared the peninsula of Carthaginians in five years. He returned to Rome and was appointed consul in 205 BC. The following year his army landed near the Carthaginian port of Utica. The Carthaginians and their Numidian allies were repeatedly beaten in battle and the Roman ally Masinissa became the leading Numidian ruler. Scipio and Carthage entered into peace negotiations, while Carthage recalled armies from Italy commanded by Hannibal and Mago Barca. The Roman Senate ratified a draft treaty, but when Hannibal arrived from Italy, Carthage repudiated it. Hannibal marched inland to confront the Romans and a battle quickly ensued.

Hamilcar Barca or Barcas (Punic: 𐤇𐤌𐤋𐤒𐤓𐤕𐤟𐤁𐤓𐤒, romanized: Ḥamilqar Qarqā; c. 275 – 228 BC) was a Carthaginian general and statesman, leader of the Barcid family, and father of Hannibal, Hasdrubal and Mago. He was also father-in-law to Hasdrubal the Fair.

Hamilcar commanded the Carthaginian land forces in Sicily from 247 BC to 241 BC, during the latter stages of the First Punic War. He kept his army intact and led a successful guerrilla war against the Romans in Sicily. Hamilcar retired to Carthage after the peace treaty in 241 BC, following the defeat of Carthage. When the Mercenary War broke out in c. 240 BC, Hamilcar was recalled to command and was instrumental in concluding that conflict successfully, in particular, having won victories in the battles of Bagradas and Saw. Hamilcar commanded the Carthaginian expedition to Spain in 237 BC, and for eight years expanded the territory of Carthage in Spain before dying in battle in 228 BC. He may have been responsible for creating the strategy which his son Hannibal implemented in the Second Punic War to bring the Roman Republic close to defeat.

Tiberius Sempronius Longus (c. 260 BC – unknown) was a Roman consul during the Second Punic War and a contemporary of Publius Cornelius Scipio (father of Scipio Africanus). In 219 BC, Sempronius and the elder Scipio were elected as consuls for 218 BC. At the outbreak of the war in 218 BC, he was ordered to conduct the war effort in Sicily and Africa, while Scipio was sent to the Iberian Peninsula to attack Hannibal himself. Sempronius was allocated two Roman legions, 16,000 allied infantry, 1,800 allied cavalry, 160 quinqueremes and 20 lighter vessels. As soon as his army was assembled he moved his forces to Sicily. Striking from Lilybaeum Sempronius captured Malta from the Carthaginians.

Shortly thereafter, with Scipio wounded and pursued by Hannibal's forces after the Battle of Ticinus, the Senate sent for Tiberius Sempronius Longus. Upon his arrival in December, and reportedly against Scipio's advice, Sempronius Longus led an ambitious attack at the Battle of the Trebia. His army charged into a trap and was enveloped by the forces of Hannibal's brother, Mago. Although it was a crushing Roman defeat, Tiberius Sempronius Longus and a force of 10,000 infantrymen fought their way through the rear Carthaginian lines and to safety.