The Arsenal

Carthage's war elephants were North African forest elephants (now extinct) — smaller than Indian elephants but trained for combat. Each carried a tower of 2–4 soldiers armed with javelins and a mahout (driver) who controlled the animal with a spike and hammer. In battle, elephants were used to break enemy formations and terrify horses, which would not stand near them. Hannibal crossed the Alps with 37; most died in the Po Valley marshes before seeing a battle. At Zama, Scipio opened lanes in his formation specifically for them to pass through harmlessly — his study of their weaknesses (they panic and turn back into their own lines when wounded or confused) was the decisive element of his pre-battle planning.

The corvus ('crow') was Rome's answer to its sailors' inexperience: a 11-metre boarding bridge mounted on a pole at the bow of a trireme, with a heavy iron spike (the 'crow's beak') at its drop end. When an enemy ship came alongside or was rammed, the corvus was released to crash down onto the enemy deck, embedding the spike and holding the ships together. Roman legionaries then crossed and fought a melee on the deck — converting every sea battle into a land battle at which they excelled. The corvus won Rome's first naval victories and terrified Carthaginian sailors who were used to outmanoeuvring inferior opponents at sea. It was apparently abandoned after the First Punic War, possibly because it made ships top-heavy in rough seas.

The pilum was Rome's distinctive heavy throwing spear — a 2-metre weapon with a long iron shank designed to bend on impact, preventing the enemy from throwing it back and weighing down shields. Each legionary carried two pila, thrown at close range just before the charge with the gladius (short sword). The pilum's long thin neck was designed to penetrate a shield and bend inside it, making the shield useless for further protection. At Cannae, Hannibal had to break the Roman pilum volley by attacking from multiple sides simultaneously — the pila lost much of their effectiveness when the Romans had no room to throw them or form for the charge.

Rome adopted the gladius hispaniensis — the 'Spanish sword' — from Celtiberian tribesmen during the Second Punic War's Iberian campaigns. A double-edged iron short sword of about 60–75 cm, optimised for thrusting rather than cutting, it became the standard Roman legionary sidearm for the next four centuries and the defining weapon of Roman infantry. Its effectiveness depended on close combat; Roman tactics from the Punic Wars onward were designed to get the legionary close enough to use the gladius, delivered through a combination of pilum volleys and the testudo (tortoise) formation. Scipio armed his veterans with gladii taken from Iberian allies at the capture of New Carthage.

Numidian light cavalry were the finest horsemen in the western Mediterranean and the arm of decision in every major land battle of the Punic Wars. Riding without saddle or bridle — controlling their horses with only a neck rope — Numidian cavalry were incomparable skirmishers, pursuers, and ambush artists. Hannibal's 6,000 Numidians were decisive at Trebia, Trasimene, and Cannae — at Cannae they held the Athenian allied cavalry in check on one flank while the heavy Iberian-Gaul cavalry destroyed the Roman allied horse on the other, then swung around to complete the encirclement. Scipio understood that to beat Hannibal he needed Numidian cavalry on his side; his alliance with King Masinissa gave him this, and the Numidians' switch of allegiance is why Zama ended differently from Cannae.

The quinquereme ('five-oar') was the standard warship of the Punic Wars — larger and heavier than the trireme, with five oarsmen sharing a bank of oars in a 3-2 pattern, giving greater ramming power at the cost of some speed and agility. Carthage had built and operated quinqueremes for generations before the First Punic War; Rome copied the design from a captured specimen. The quinquereme's greater size made it more suitable for the boarding tactics that the Roman corvus imposed on Carthaginian fleets — the smaller, more agile trireme advantage that Athens had used at Salamis was less decisive when both sides were building the same class of ship.

The falcata was a forward-curving single-edged Iberian sword about 45–65 cm long — its curved geometry concentrated the force of a blow to maximise cutting power, making it effective against both armour and shields. Hannibal's Iberian infantry, equipped with falcatas, were considered the finest heavy infantry in his army. At Cannae, the Iberian and Galatian veterans in the centre bore the shock of the entire Roman army and held it long enough for the double envelopment to close; their discipline in absorbing the Roman push while appearing to retreat without actually breaking was the tactical hinge of the battle. Rome later adopted the falcata's design principles in developing the gladius hispaniensis.

Roman armies used torsion-powered artillery — ballistae (bolt-shooters) and onagri (stone-throwers) — inherited from Hellenistic Greek engineering and refined during the Punic Wars. At the siege of Carthage (149–146 BC), Scipio Aemilianus deployed artillery to suppress defenders on the city walls during the final assault. Roman artillery was lighter and more mobile than Greek equivalents; the legion's engineering corps (immunes) could assemble and disassemble siege equipment rapidly. The three-year siege of Carthage was the most prolonged and systematic Roman siege operation to that date, applying lessons learned from Hannibal's own siege operations and from watching Syracuse resist Athens.

Slingers from the Balearic Islands served as Hannibal's elite missile troops. Trained from childhood (Balearic mothers reputedly withheld bread from their sons and hung it from branches, making them hit it with a sling before they could eat), they could hurl a lead or stone bullet with enough force to penetrate armour at 50 metres. Their projectiles were heavier and faster than arrows and made almost no sound in flight, making them extremely difficult to dodge. Hannibal used them as a screening force on his flanks and to suppress enemy missile troops before the main engagement.

The manipular legion — Rome's standard tactical formation of the Punic Wars period — divided an army into 30 maniples (small units) of 120–160 men arranged in three lines by experience: hastati (youngest), principes (experienced), and triarii (veterans). Unlike the rigid phalanx, the maniples could operate semi-independently, maintain formations on broken ground, pivot to face flank threats, and reinforce each other from the rear. The system's flexibility is why Rome kept raising and winning with new legions after catastrophes like Cannae — individual maniples could be reorganised around veteran cores even after heavy losses. Scipio's tactical reforms at New Carthage began the transition to the cohort system that would dominate for the next five centuries.