Castle Age

The Castle Age is the third Age in Age of Empires II: The Age of Kings and its expansion, The Conquerors. This upgrade is unlocked by building two Feudal Age buildings (besides towers, gates, walls, and fish traps.)

All units, buildings, and techs below are unlocked only after a player reachs the Castle Age. For unit, building, and tech lists for the other Ages, see Dark Age, Feudal Age, and Imperial Age.

Castle Age Units
Civilian Units
 * Monk-trained at Monastery; healing and conversion unit
 * Missionary -trained at Monastery; fast unique Spanish Monk unit

Military Units
 * Long Swordsman-trained at Barracks; swordsman unit (upgrade of Man-at-Arms)
 * Pikeman-trained at Barracks; anti-cavalry unit (upgrade of Spearman)
 * Crossbowman-trained at Archery Range; archer (upgrade of Archer)
 * Elite Skirmisher-train at Archery Range; anti-archer unit (upgrade of Skirmisher)
 * Cavalry Archer-trained at Archery Range; mounted archer unit
 * Camel-trained at Stable; anti-cavalry unit
 * Knight-trained at Stable; heavy cavalry unit
 * Light Cavalry-trained at Stable; light cavalry unit (upgrade of Scout Cavalry)
 * Unique Unit-trained at Castle (a unique unit is either a stronger version of an existing unit, or a completely new type of unit. For information on all unique units in Age of Empires II, see List of unique units in Age of Empires II).
 * Mangonel-built at Siege Workshop; ranged siege unit w/ splash attack
 * Battering Ram-built at Siege Workshop; anti-building siege unit
 * Scorpion-built at Siege Workshop; ranged siege unit
 * Fire Ship-built at Dock; close range anti-galley ship unit
 * Demolition Ship-built at Dock; deadly self-destructing ship unit
 * War Galley-built at Dock; galley unit (upgrade of Galley)
 * Longboat-built at Dock; unique Viking galley unit
 * Turtle Ship-built at Dock; unique Korean ship

Castle Age Buildings
Economic Buildings
 * Monastery-Trains and upgrades Monk
 * University-Upgrades buildings, villagers, military units, and siege weapons

Military Buildings
 * Castle-Trains and upgrades Unique Units and also builds Trebuchets (Imperial Age only) and Petards
 * Siege Workshop-Trains and upgrades siege units.

Defensive Structures
 * Guard Tower-Fires at nearby enemies (upgrade of Watch Tower)
 * Fortified Wall-Blocks enemies' paths (upgrade of Dock; unique Viking galley unit|Stone Wall]])

Castle Age Techs
Economic Techs
 * Town Patrol -research at Town Center; +4 building LOS
 * Hand Cart -research at Town Center; +10% villager speed, +50% villager capacity
 * Heavy Plow -research at Mill; farm +125 food, +1 villager food capacity
 * Bow Saw -research at Lumber Camp; +20% wood-chopping speed
 * Stone Shaft Mining -research at Mining Camp; +15% stone-mining speed
 * Gold Shaft Mining -research at Mining Camp; +15% gold-mining speed
 * Banking-research at Market; no tribute fee
 * Masonry-research at University; increases building HPs/armor
 * Treadmill Crane-research at University; +20% villager build speed
 * Careening-research at Dock; +1P armor, +5 transport ship capacity
 * Redemption-research at Monastery; convert most buildings, siege units
 * Fervor-research at Monastery; +15% Monk speed
 * Sanctity-research at Monastery; +50% Monk HPs
 * Atonement-research at Monastery; convert other Monks

Military Techs
 * Squires-research at Barracks; +10% infantry speed
 * Husbandry-research at Stable; +10% cavalry speed
 * Chain Mail Armor-research at Blacksmith; +1/+1P infantry armor
 * Bodkin Arrow -research at Blacksmith; +1 attack/range for archers, galleys, Longboat, Town Centers, Castles and towers.
 * Leather Archer Armor -research at Blacksmith; +1 infantry/cavalry attack
 * Chain Barding Armor -research at Blacksmith; +1/+1P cavalry armor
 * Ballistics -research at University; track moving units
 * Murder Holes -research at University; no minimum tower range
 * Heated Shot -research at University; +125% tower, 25% Castle attack vs. ships