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Unit upgrades increase the HP and attack of a unit type. A new upgrade becomes available in every Age. All unit upgrades take 30 seconds to complete. The cost approximately triples every age.

In contrast to the previous installments of Age of Empires series, the unit upgrades of every civilization in Age of Empires III usually do not change the original name of the unit, and in most of the cases only add a title word. Royal Guard upgrades are the most common way of changing the units name, although certain improved Church cards also have this effect. Royal Guard upgrades only apply to European civilizations from the base game and were not given to expansion civilizations.

The upgrade effect is always applied to the base units stats, combining additively. Some of the units available in later ages have better base stats because they don't get the early upgrades. This has the effect that their later upgrades are more powerful in comparison.

Fortress Age Edit

Veteran infantry

The Fortress Age upgrade, titled Veteran for European civilizations, Elite for Native American civilizations, and Disciplined for Asian civilizations, adds 20% (25% for Native American civilizations) hit points and attack to the units.

Veteran/Elite/Disciplined upgrades cost 200 wood and 200 coin for European civilizations or 200 wood and 100 coin for Native American and Asian civilizations.

For minor civilizations the cost is 200 wood, 150 coin. For the Aztecs/Zapotec, Inca, and Iroquois/Huron who have two native warriors, the upgrade costs 300 wood and 200 coin instead.

Industrial Age Edit

Guard infantry

The Industrial Age upgrade, titled Guard for European civilizations, Champion for Native American civilizations, and Honored for Asian civilizations, adds 30% (25% for Native American civilizations) hit points and attack to the units, for a total of +50% hit points and attack.

Guard/Champion/Honored upgrades cost 600 wood and 600 coin for European civilizations, Indian and Japanese; 300 wood and 300 coin for the Chinese; and 400 wood and 200 coin for major Native American civilizations. This includes the Ram and Mantlet for the Iroquois.

For minor civilizations the cost is 400 wood, 300 coin. For the Aztecs, Inca and Iroquois natives who have two native warriors, the upgrade costs 500 wood and 400 coin instead.

Royal Guard Edit

Some European civilizations' Industrial Age unit upgrades carry the title Royal Guard, which adds 40% hit points and attack to the units instead of 30%, for a total of +60% hit points and attack, and changes their name. This makes a civilization's Royal Guard units stronger than other civilizations' Guard units.

Royal Guard upgrades cost 1,000 wood and 1,000 coin.

Civilization Units (title)
Flag british large normal
British
Musketeer (Redcoat)
Hussar (King's Life Guard)
Flag dutch large normal
Dutch
Halberdier (Nassauer)
Ruyter (Carabineer)
Flag french large normal
French
Skirmisher (Voltigeur)
Cuirassier (Gendarme)
Flag germans large normal
Germans
Skirmisher (Needle Gunner)
Uhlan (Czapka)
Flag ottomans large normal
Ottomans
Hussar (Gardener)
Grenadier (Baractu)
Flag portuguese large normal
Portuguese
Musketeer (Guerreiro)
Dragoon (Jinete)
Flag russians large normal
Russians
Cavalry Archer (Tartar)
Grenadier (Pavlov)
Flag spanish large normal
Spanish
Pikeman (Tercio)
Rodelero (Espada)
Lancer (Garrochista)

Artillery Edit

Artillery units can be upgraded at the Industrial Age, which adds 25% hit points and attack, and changes the unit's name. They cost 250 wood and 250 food.

These upgrades are available to the cannon units unlocked in the same Age from the Artillery Foundry as well as the Siege Workshop (although the cost of the Light Cannon's upgrade requires food and coin in the same amount, instead of food and wood). However these upgrades do not apply to Factory-produced artillery.

Imperial Age Edit

Imperial infantry

The Imperial Age upgrade, titled Imperial for European civilizations, Legendary for Native American civilizations, and Exalted for Asian civilizations, adds 50% hit points and attack to the units, for a total of +100% hit points and attack (+110% in case of Royal Guard units and +75% in case of artillery). This upgrade is also available for the Frigate, Monitor, and Factory-produced artillery, where it is the first upgrade available.

Imperial/Legendary/Exalted upgrades cost 1,500 wood and 1,500 coin for European civilizations, Indians and Japanese. For the Chinese it costs 750 wood and 750 coin per unit. For Asian civilizations, Exalted artillery upgrades cost 1,000 wood and 1,000 coin.

All allied minor civilization units are upgraded for a flat cost of 1500 wood, 1500 coin through Legendary Native Warriors.

Cost Summary Edit

Age European Minor native Major native Asian Chinese
3 200/200 200/150 200/100 200/100 200/100
4 600/600 400/300 400/200 600/600 300/300
4 (RG) 1000/1000 n/a
5 1500/1500 1500/1500 1500/1500 1500/1500 750/750

Auto upgrades Edit

Some units in Age of Empires III upgrade automatically when reaching a new Age instead of the upgrade having to be bought and researched. These units are usually those not trained in the normal way such as the Explorer, or units mainly available at the Home City.

The following units have this trait:

See also Edit

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