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This article is about the technology in Age of Empires II. For the technology in Age of Empires IV, see Siege Engineering.

Siege Engineers is a technology in Age of Empires II that can be researched at the University once the Imperial Age is reached. Once researched, it increases the attack of most siege units (including Ballista Elephants and siege ships) against buildings by 20%, and that of suicide siege units by 40%. It also increases the range of all such ranged units by 1.

In addition, Siege Towers and rams have their Line of Sight increased by +1.

Availability chart[]

Siegeengineersavailable AvailableSiegeengineersunavailable Unavailable

Team bonuses[]

  • Malians AoE2 Malians: Researching Siege Engineers is 80% faster.
  • Portuguese AoE2 Portuguese: Researching Siege Engineers is 25% faster.

Other similar bonuses and technologies[]

Some civilizations have either bonuses or unique technologies that increase the range of a type of siege unit:

  • The Koreans have Shinkichon, which increases the range of Onagers by 1, and access to Siege Engineers; as a result, they have the Onagers with the longest range at 10.
  • The Khmer team bonus gives +1 range for Scorpions, and they have access to Siege Engineers; as a result, they and their teammates (with Siege Engineers) have the Scorpions with the longest range at 9.
  • The Tatars have Timurid Siegecraft, which increases the range of Trebuchets by 2, and access to Siege Engineers; as a result, they have the Trebuchets with the longest range and the unit with the longest range in the game at 19.
  • Despite lacking Siege Engineers, Turk Elite Cannon Galleons and Bombard Cannons have the longest range at 17 and 14, respectively, thanks to Artillery which gives +2 range.

Despite lacking Siege Engineers, Burgundian Bombard Cannons deal more damage than other Bombard Cannons with Siege Engineers (outside of the Houfnice), since the Burgundian civilization bonus granting +25% attack to gunpowder units applies to all attacks (not just attack vs buildings).


AoE2-DLCicon-0 The Age of Kings[]

AoE2-DLCicon-2 The Forgotten[]

  • Magyars AoE2 Magyars: Cannot research Siege Engineers.

AoE2-DLCicon-4 Rise of the Rajas[]

AoEIIDE icon Definitive Edition[]

Dawn of the Dukes icon Dawn of the Dukes[]

  • Poles AoE2 Poles: Upon release, cannot research Siege Engineers. With update 56005, Siege Engineers was added to their technology tree.

AoE2Icon-DynastiesIndia Dynasties of India[]

AoE2Icon-ReturnRome Return of Rome[]

Aoe2 hb Victors and Vanquished[]


Men who specialized in designing, building, and operating siege weapons were called siege engineers. These weapons were marvels of their age and complicated to operate. Hitting a narrow stone wall from a distance with a plunging stone shot was a difficult problem. Kings prized men who could solve it.
Technologies in Age of Empires II
Economic technologies
MaleVillDEFEMALEVILLDE VillagerWheelbarrowDE Wheelbarrow · HandcartDE Hand Cart
Aoe2de food FoodHorseCollarDE Horse Collar · HeavyPlowDE Heavy Plow · CropRotationDE Crop Rotation
GillnetsDE Gillnets
Aoe2de wood WoodDoubleBitAxe aoe2DE Double-Bit Axe · BowSawDE Bow Saw · TwoManSawDE Two-Man Saw
Aoe2de gold GoldGoldMiningDE Gold Mining · GoldShaftMiningDE Gold Shaft Mining
CaravanDE Caravan
Aoe2de stone StoneStoneMiningDE Stone Mining · StoneShaftMiningDE Stone Shaft Mining
Civilian shipsDryDockDE Dry Dock · ShipwrightDE Shipwright
Market aoe2DE MarketCoinageDE Coinage · BankingDE Banking
GuildsDE Guilds
Military technologies
GeneralConscriptionDE Conscription
HeresyDE Heresy · Devotion icon AoE2DE Devotion · FaithDE Faith
Melee unitsForging aoe2de Forging · IronCastingDE Iron Casting · BlastFurnaceDE Blast Furnace
CavalryBloodlinesDE Bloodlines · HusbandryDE Husbandry
ScaleBardingArmorDE Scale Barding Armor · ChainBardingDE Chain Barding Armor · PlateBardingArmorDE Plate Barding Armor
InfantrySuplliesicon Supplies · AoE2 Gambesons Gambesons · SquiresDE Squires · ArsonDE Arson
ScaleMailArmorDE Scale Mail Armor · ChainMailArmorDE Chain Mail Armor · PlateMailArmorDE Plate Mail Armor
Ranged unitsBallisticsDE Ballistics · ChemistryDE Chemistry
FletchingDE Fletching · BodkinArrowDE Bodkin Arrow · BracerDE Bracer
ArchersPaddedArcherArmorDE Padded Archer Armor · LeatherArcherArmorDE Leather Archer Armor · RingArcherArmorDE Ring Archer Armor
ThumbRingDE Thumb Ring · ParthianTacticsDE Parthian Tactics
SiegeSiegeEngineersDE Siege Engineers
ShipCareeningDE Careening · DryDockDE Dry Dock
ShipwrightDE Shipwright
WarGalleyDE War Galley
BuildingTownWatchDE Town Watch · TownPatrolDE Town Patrol
Masonry aoe2de Masonry · ArchitectureDE Architecture
HeatedShotDE Heated Shot · ArrowSlitsDE Arrowslits · MurderHolesDE Murder Holes · TreadmillCraneDE Treadmill Crane · HoardingsDE Hoardings · BombardTower aoe2DE Bombard Tower
HerbalDE Herbal Medicine
MonkRedemptionDE Redemption · AtonementDE Atonement · SanctityDE Sanctity · FervorDE Fervor · IlluminationDE Illumination · BlockPrintingDE Block Printing · TheocracyDE Theocracy
MaleVillDEFEMALEVILLDE VillagerLoomDE Loom · SapperDE Sappers
Miscellaneous technologies
SpiesDE Spies · SpiesDE Treason · UniqueTechCastle-DEUniqueTechImperialDE Unique technologies
Removed/cut generic technologies
Bombardcannonresearch Bombard Cannon · CannongalleonresearchDE Cannon Galleon · Cartography aoe2de Cartography · Handcannon Hand Cannon · Huntingdogs Hunting Dogs · Revetments · TrackingDE Tracking