Who was Hannibal, and how did he threaten Rome during the Second Punic War?

Hannibal was a renowned Carthaginian general and the son of Hamilcar Barca. Sworn to eternal hostility against Rome from a young age, he became the primary architect of the Carthaginian war effort during the Second Punic War.1

Threatening Rome

Hannibal posed an existential threat to the Roman Republic by invading Italy, famously crossing the Alps with an army that included infantry, cavalry, and war elephants. His strategy centered on defeating Roman armies in the field to dismantle Rome's network of Italian allies.234

• Military Victories: Hannibal achieved devastating successes, most notably at the Battle of Lake Trasimene and the Battle of Cannae. At Cannae, he executed a classic double envelopment, slaughtering a significant portion of Rome's military-age male population.34
• Psychological Impact: These victories caused widespread panic in Rome, where Hannibal became a feared figure.34
• Strategic Pressure: By ravaging the Italian countryside and seizing supply depots, he forced Rome to adopt the Fabian strategy of attrition to avoid further decisive losses.34

Despite his tactical genius, Hannibal was ultimately unable to force a final surrender, as Rome’s resolve remained unbroken and his own forces suffered from a lack of reinforcements and steady attrition.354