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

Units are 50% harder for enemy Monks to convert.
—In-game description

Faith is a technology in Age of Empires II that can be researched at the Monastery once Devotion has been researched and the Imperial Age is reached. Once researched, it increases the resistance of all units against conversion by raising the minimum and maximum time needed for a conversion by four seconds.


Faith is the most expensive technology in the Monastery. For this reason, it is not recommended to acquire this technology unless the enemy is making a lot of Monks or the player lacks good Hussars.


The Teutons give all their own units and their team mates' units a higher conversion resistance, and also have access to Faith. The Sicilian unique technology First Crusade also gives their units a higher conversion resistance, and they also have access to Faith. As a result, these two civilizations have the highest resistances against conversion in 1v1 games. In team games, the Sicilians with a Teuton ally have the highest possible conversion resistance.


The following civilizations can research technologies or have bonuses related to Faith:

Unique technologies[]

Civilization bonuses[]

Team bonuses[]


AoE2-DLCicon-0 The Age of Kings[]

  • Faith costs 750 food, 1,000 gold.
  • Faith increases the minimum time needed for a conversion by two seconds, and the maximum time by about four seconds. The chance that a Monk has per second to complete the conversion is also lowered by 67% (which increases the average conversion time) by increasing the conversion resistance level by 3.

AoE2-DLCicon-2 The Forgotten[]

  • Slavs AoE2 Slavs: Cannot research Faith.

AoE2-DLCicon-4 Rise of the Rajas[]

  • Khmer AoE2 Khmer: Cannot research Faith.

AoEIIDE icon Definitive Edition[]

  • Khmer AoE2 Khmer: Faith added to their technology tree.
  • Slavs AoE2 Slavs: Faith added to their technology tree.
  • Portuguese AoE2 Portuguese: With update 42848, all technologies are researched 30% faster.

AoE2Icon-MountainRoyals The Mountain Royals[]

  • With update 99311, Faith requires Devotion to be researched and costs 550 food, 750 gold.
  • With update 99311, Faith increases the minimum and maximum time needed for a conversion by 4 seconds each.


  • The Tatars are the only civilization that lacks both Faith and Heresy, thus having minimum protection against conversion.
  • Faith's icon is based on a stain glass window depicting Saint John in St Patrick's Basilica in Ottawa, Canada,[1] to whom the Gospel of John's authorship is traditionally attributed.
  • Faith was the only Monastery technology before The Conquerors and between patch 1.0b and update 99311 to cost food.
    • Since its introduction in The Conquerors and before patch 1.0b, Theocracy also cost food.
    • Since its introduction in update 99311, Devotion also costs food.


Civilizations can conflict ideologically, as well as militarily and economically. When the Christian Crusaders invaded the Holy Lands, for example, they encountered the ideas of Islam, as well as new weapons, tactics, and desirable goods.
Age of Empires II manual


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