Byzantines (Age of Empires IV)/Tree

The Byzantine technology tree in Age of Empires IV.

Dark Age	Feudal Age	Castle Age	Imperial Age
	Cheirosiphon
	Siege Tower
Town Center
Capital	Additional
Villager	Textiles
Scout
House
	Border Settlements
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
Olive Grove
Barracks
Limitanei ➞	Hardened Limitanei ➞	Veteran Limitanei ➞	Elite Limitanei
		Varangian Guard ➞	Elite Varangian Guard
			Ferocious Speed
Dock
Fishing Boat	Extended Lines ➞	Drift Nets
Transport Ship
	Trade Ship
	Archer ship	Extra Hammocks	Heated Shot
	Incendiary ship	Liquid Explosives	Explosives
	Dromon	Heavy Dromon
			Warship
	Naval Arrowslits
		Armored Hull ➞	Shipwrights
			Liquid Explosives
Cistern
Aqueduct
Palisade Wall
Palisade Gate
Outpost
	Fortify Outpost
	Arrowslits	Mangonel 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
		Military Academy
		Teardrop Shields
	Archery Range
	Archer ➞	Veteran Archer ➞	Elite Archer
		Crossbowman ➞	Elite Crossbowman
			Handcannoneer
	Stable
	Scout		Spyglass
	Horseman ➞	Veteran Horseman ➞	Elite Horseman
		Cataphract ➞	Elite Cataphract
	Expilatores
	Trapezites
			Numeri
	Mercenary House
		Veteran Contract	Elite Contract
Eastern Mercenary Contract	Keshik →	Veteran Keshik →	Elite Keshik
		Ghulam →	Elite Ghulam
			Tower Elephant
			Howdahs
Western Mercenary Contract	Longbowman →	Veteran Longbowman →	Elite Longbowman
		Landsknecht →	Elite Landsknecht
			Streltsy
Silk Road Mercenary Contract	Javelin Thrower →	Veteran Javelin Thrower →	Elite Javelin Thrower
		Camel Rider →	Elite Camel Rider
			Grenadier
1	Sipahi →	Veteran Sipahi →	Elite Sipahi
		Arbalétrier →	Elite Arbalétrier
2	Zhuge Nu →	Veteran Zhuge Nu →	Elite Zhuge Nu
		War Elephant	Armored Beasts
3	Royal Knight →	Veteran Royal Knight →	Elite Royal Knight
		Horse Archer →	Elite Horse Archer
4	Musofadi Warrior →	Veteran Musofadi Warrior →	Elite Musofadi Warrior
	Camel Archer →	Veteran Camel Archer →	Elite Camel Archer
5	Mangudai →	Veteran Mangudai →	Elite Mangudai
	Desert Raider →	Veteran Desert Raider →	Elite Desert Raider
	Stone Wall
	Stone Wall Gate
	Stone Wall Tower
		Keep
		Boiling Oil
		Mangonel Emplacement	Cannon Emplacement
		Monastery
		Monk
		Herbal Medicine	Piety
			Tithe Barns
		Siege Workshop
		Cheirosiphon	Lightweight Beams
		Springald	Roller Shutter Triggers
		Mangonel	Adjustable Crossbars
		Counterweight Trebuchet	Greek Fire Projectiles
			Bombard
			Culverin
			Ribauldequin
		Greased Axles
			University
			Chemistry
			Siege Works
			Silk Bowstrings
			Serpentine Powder
			Biology
			Incendiary Arrows
			Court Architects
			Elite Army Tactics
Landmark
Grand Winery
Imperial Hippodrome
	Golden Horn Tower
	Cistern of the First Hill
		Foreign Engineering Company
			Nest of Bees
			Huihui Pao
			Royal Cannon
		Palatine School