Age of Empires IV is a real-time strategy game that requires you to memorize tech trees to play effectively and get units out as soon as possible when you need them. However, each civilization has unique features and units, so remembering the prerequisites for each one can be difficult.

Full Rus Tech Tree

The tech tree below is sorted in ascending order by Civilization Age, then alphabetically by Building and the units/upgrades they provide at that Age. If a unit/upgrade is nested in another unit/upgrade, the parent list item is a prerequisite to the child list item.

Dark Age

The following buildings and units become available in the Dark Age.

  • BarracksDark AgeSpearmanHardened SpearmanVeteran Spearman (Castle Age)Elite Spearman (Imperial Age)Castle AgeMan-at-ArmsElite Man-at-Arms (Imperial Age)DockDark AgeLodya Fishing BoatLodya Transport ShipFeudal AgeLodya Trade ShipLodya Attack ShipExtended LinesDrift Nets (Castle Age)Additional SailsCastle AgeLoday Demonlition ShipArmored HullNavigator LookoutClinker ConstructionImperial AgeCedar HullsExplosivesFarmFortified Palisade GateFortified Palisade WallHouseHunting CabinDark AgeScoutSurvival TechniquesWheelbarrowFeudal AgeProfessional ScoutsHorticultureFertilization (Castle Age)Precision Cross-Breeding (Imperial Age)Kremlin (Landmark)Castle AgeSpringald EmplacementLumber CampDark AgeForestryFeudal AgeDouble BroadaxLumber Preservation (Castle Age)Crosscut Saw (Imperial Age)Mining CampFeudal AgeSpecialized PickAcid Distillation (Castle Age)Cupellation (Imperial Age)The Golden Gate (Landmark)Town CenterDark AgeScoutVillagerFeudal AgeTextilesWood FortressDark AgeCastle TurretCastle WatchFeudal AgeArrowslitsCastle AgeSpringald Emplacement

Feudal Age

The following buildings and units become available in the Feudal Age.

  • Hardened SpearmanVeteran Spearman (Castle Age)Elite Spearman (Imperial Age)

  • Veteran Spearman (Castle Age)Elite Spearman (Imperial Age)

  • Elite Spearman (Imperial Age)

  • Elite Man-at-Arms (Imperial Age)

  • Drift Nets (Castle Age)

  • Fertilization (Castle Age)Precision Cross-Breeding (Imperial Age)

  • Precision Cross-Breeding (Imperial Age)

  • Castle AgeSpringald Emplacement

  • Lumber Preservation (Castle Age)Crosscut Saw (Imperial Age)

  • Crosscut Saw (Imperial Age)

  • Acid Distillation (Castle Age)Cupellation (Imperial Age)

  • Cupellation (Imperial Age)

  • ScoutVillager

  • Abbey of the TrinityCastle AgeWarrior MonkImproved BlessingSaint’s ReachHerbal MedicineImperial AgePietyTithe BarnsArchery RangeFeudal AgeArcherVeteran Archer (Castle Age)Elite Archer (Imperial Age)Castle AgeCrossbowmanElite Crossbowman (Imperial Age)Horse ArcherElite Horse Archer (Imperial Age)Imperial AgeStreltsyMounted PrecisionDouble TimeBattering RamBlacksmithFeudal AgeBloomeryDecarbonization (Castle Age)Damascus Steel (Imperial Age)Steeled ArrowBalanced Projectiles (Castle Age)Platecutter Point (Imperial Age)Fitted LeatherworkInsulated Helm (Castle Age)Mastered Smiths (Imperial Age)Iron UndermeshWedge Rivets (Castle Age)Angled Surfaces (Imperial Age)Siege EngineeringCastle AgeMilitary AcademyHigh Trade HouseSurvival TechniquesWheelbarrowProfessional ScoutsHorticultureFertilization (Castle Age)Precision Cross-Breeding (Imperial Age)MarketFeudal AgeTraderSiege TowerStableFeudal AgeScoutHorsemanVeteran Horseman (Castle Age)Elite Horseman (Imperial Age)Early KnightKnight (Castle Age)Elite Knight (Imperial Age)Castle AgeBoyar’s FortitudeImperial AgeKnight Sabers

Castle Age

The following buildings and units become available in the Castle Age.

  • Veteran Archer (Castle Age)Elite Archer (Imperial Age)

  • Elite Archer (Imperial Age)

  • Elite Crossbowman (Imperial Age)

  • Elite Horse Archer (Imperial Age)

  • Decarbonization (Castle Age)Damascus Steel (Imperial Age)

  • Damascus Steel (Imperial Age)

  • Balanced Projectiles (Castle Age)Platecutter Point (Imperial Age)

  • Platecutter Point (Imperial Age)

  • Insulated Helm (Castle Age)Mastered Smiths (Imperial Age)

  • Mastered Smiths (Imperial Age)

  • Wedge Rivets (Castle Age)Angled Surfaces (Imperial Age)

  • Angled Surfaces (Imperial Age)

  • Military Academy

  • Veteran Horseman (Castle Age)Elite Horseman (Imperial Age)

  • Elite Horseman (Imperial Age)

  • Knight (Castle Age)Elite Knight (Imperial Age)

  • Elite Knight (Imperial Age)

  • High Armory (Landmark)Castle AgeWandering TownSiege CrewFine Tuned GunsBanded ArmsKeep Castle AgeSpringald EmplacementBoiling OilImperial AgeCannon EmplacementMonasteryCastle AgeWarrior MonkHerbal MedicineBlessing DurationImperial AgePietyTithe BarnsSiege WorkshopCastle AgeSpringaldMangonelCounterweight TrebuchetGreased AxlesImperial AgeBombardRoller Shutter TriggersAdjustable CrossbarsSiege WorksSpasskaya Tower (Landmark)Castle AgeBoiling Oil

Imperial Age

The following buildings and units become available in the Imperial Age.

  • Castle AgeWandering TownSiege CrewFine Tuned GunsBanded Arms

  • Castle AgeBoiling Oil

  • Cathedral of the Tsar (Landmark)UniversityImperial AgeChemistryGeometryBiologyIncendiary ArrowsCourt ArchitectsElite Army Tactics

That’s the entire tech tree for the Rus Civilization!

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