Holy Roman Empire/Tree

Civilization

Technology tree

Mastery

Civilization

Technology tree

Mastery

The Holy Roman Empire's technology tree in Age of Empires IV.

Dark Age	Feudal Age	Castle Age	Imperial Age
	Battering Ram
	Siege Tower
Town Center
Capital	Additional
Villager	Textiles
Scout
Prelate
House
Mill
Survival Techniques	Professional Scouts
Wheelbarrow
	Horticulture ➞	Fertilization ➞	Precision Cross-Breeding
Lumber Camp
Forestry	Double Broadax ➞	Lumber Preservation ➞	Crosscut Saw
Mining Camp
	Specialized Pick ➞	Shaft Mining ➞	Cupellation
Farm
Barracks
Spearman ➞	Hardened Spearman ➞	Veteran Spearman ➞	Elite Spearman
	Early Man-at-Arms ➞	Man-at-Arms ➞	Elite Man-at-Arms
		Landsknecht ➞	Elite Landsknecht
		Heavy Maces
		Two-Handed Weapons
Dock
Fishing Boat	Extended Lines ➞	Drift Nets
Transport Ship
	Trade Ship
	Archer ship	Extra Hammocks	Heated Shot
	Incendiary ship	Incendiaries	Explosives
	Springald ship	Springald Crews	Swivel Cannon
			Warship
	Naval Arrowslits
	Fire Stations
		Armored Hull ➞	Shipwrights
Palisade Wall
Palisade Gate
Outpost
	Fortify Outpost
	Arrowslits	Springald Emplacement	Cannon Emplacement
	Market
	Trader
	Blacksmith
	Bloomery ➞	Decarbonization ➞	Damascus Steel
	Steeled Arrow ➞	Balanced Projectiles ➞	Platecutter Point
	Fitted Leatherwork ➞	Insulated Helm ➞	Master Smiths
	Iron Undermesh ➞	Wedge Rivets ➞	Angled Surfaces
	Siege Engineering
	Marching Drills
		Military Academy
	Archery Range
	Archer ➞	Veteran Archer ➞	Elite Archer
		Crossbowman ➞	Elite Crossbowman
			Handcannoneer
	Stable
	Scout		Spyglass
	Horseman ➞	Veteran Horseman ➞	Elite Horseman
		Knight ➞	Elite Knight
	Stone Wall
	Stone Wall Gate
	Stone Wall Tower
		Keep
		Boiling Oil
		Springald Emplacement	Cannon Emplacement
		Slate and Stone Construction	Reinforced Defenses
		Monastery
		Prelate
		Herbal Medicine	Piety
		Benediction
		Devoutness
		Inspired Warriors
			Tithe Barns
		Siege Workshop
		Battering Ram	Lightweight Beams
		Springald	Roller Shutter Triggers
		Mangonel	Adjustable Crossbars
		Counterweight Trebuchet	Geometry
			Culverin
		Greased Axles
			University
			Chemistry
			Siege Works
			Silk Bowstrings
			Serpentine Powder
			Biology
			Incendiary Arrows
			Court Architects
			Elite Army Tactics
Landmark
Aachen Chapel
Meinwerk Palace
	Riveted Chain Mail	Steel Barding
	Burgrave Palace
	Regnitz Cathedral
		Elzbach Palace
		Palace of Swabia