History

Famous Siege Weapons of Ancient Warfare

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Updated:3/7/2026
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Siege Weapon
Era
Mechanism
Famous Use
Known For
Counterweight Trebuchet
12th-15th centuryCounterweight-powered sling armEdward I's 'Warwolf' at Stirling Castle (1304)Could hurl 300 lb stones 300+ meters, most powerful pre-gunpowder siege engine, Warwolf was so feared Scots surrendered before it fired
Battering Ram
Ancient (2000+ BC) onwardHeavy log swung or rolled into gates/wallsRoman siege of Jerusalem (70 AD)Oldest siege weapon in history, often housed in a wheeled shelter (tortoise/penthouse), sometimes iron-headed
Ballista
4th century BC - 5th century ADTorsion-powered bolt/stone throwerRoman legions, Siege of SyracuseGiant crossbow firing bolts or stones, highly accurate at 500m range, Romans deployed them in batteries, anti-personnel weapon
Onager (Mangonel)
Roman era - medievalTorsion-powered single-arm catapultRoman frontier defense, CrusadesNamed after wild donkey (kicks hard), simpler than trebuchet, could hurl stones and incendiaries, widespread use
Siege Tower (Belfry)
Ancient - medievalMobile multi-story wooden tower rolled to wallsSiege of Tyre by Alexander the Great (332 BC)Protected attackers climbing to wall height, drawbridge at top, sometimes 20+ meters tall, often destroyed by fire
Greek Fire Siphon
7th-12th century ByzantinePressurized flamethrower on ships/wallsByzantine defense of Constantinople (674, 717 AD)Burned on water (exact formula lost), saved Byzantine Empire twice, terrifying psychological weapon, state secret
Helepolis ('Taker of Cities')
305 BCMassive siege tower (40m tall, 21m wide)Siege of Rhodes by Demetrius ILargest siege tower ever built, 9 stories, iron-plated, 3,400 men to move it, ultimately failed at Rhodes
Catapult (Petrobolos)
4th century BC onwardTorsion spring arms launching stonesPhilip II and Alexander the Great's campaignsFirst torsion-powered artillery, revolutionized siege warfare, evolved into Roman onager and ballista
Mining / Sapping
Ancient onwardTunnel under walls, collapse with fireSiege of Rochester Castle (1215) — King John used pig fatUndermine = literally mining under walls, props burned to collapse tunnel, countered by flooding or counter-mining
Corvus (Boarding Bridge)
3rd century BC (Roman)Pivoting boarding bridge with iron spikeBattle of Mylae (260 BC) vs CarthageTurned naval battles into land battles, spike locked into enemy deck, gave Rome naval superiority over Carthage
Sambuca
3rd century BCShip-mounted scaling ladder/platformRoman siege of Syracuse (214 BC)Named after harp-like shape, mounted on paired ships, Archimedes reportedly destroyed them with mirrors and cranes
Scorpio (Scorpion)
Roman Republic/EmpireSmall torsion crossbow on tripodJulius Caesar's Gallic Wars, MasadaPortable anti-personnel weapon, each legion had 60, accurate bolt shooter, smaller cousin of the ballista
Trebuchet (Traction)
5th century China - 12th centuryHuman-pulled ropes swing throwing armChinese and Byzantine sieges, early CrusadesPredecessor of counterweight trebuchet, team of 40-250 men pulling ropes, faster rate of fire, less powerful
War Elephant
Ancient (300 BC - 200 AD)Armored elephants charge walls/gatesHannibal crossing the Alps, Battle of HydaspesLiving siege engines, terrified horses and infantry, could batter wooden gates, unpredictable if panicked
Boiling Oil / Pitch
Medieval (and ancient)Heated liquid poured from murder holes/wallsDefense of castles throughout CrusadesActually more often boiling water or heated sand (oil was expensive), murder holes designed specifically for this purpose

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