This article is about the unit in Age of Empires III. For other uses of the term, see Spy.
"Sneaky assassin. Highly effective against mercenaries, Explorers, War Chiefs, and Monks."
In-game description

The Spy is a melee infantry unit in Age of Empires III: The WarChiefs that can be trained at the Church/Mosque. It is a fast stealthy unit that excels against mercenaries and heroes.

Spies are available to European civilizations except the Knights of St. John (Act I: Blood campaign).

Overview Edit

The Spy moves very quickly, and has the stealth ability, although it can be seen at all time by the enemies Explorers, Town Centers, Forts, and some other units. When in stealth mode, spies move considerably slower than normal. They are also highly resistant to special abilities, taking much less damage than non-Spies do.

The Spy is very good at scouting the enemy without them knowing, giving advanced notice on what they are building and when they will attack. The Spy has a very low base damage, but huge multipliers against Explorers and Mercenaries. The Spy can easily change the tide of a battle by coming in stealthed, and unstealthing and taking out enemy Mercenaries (including Li'l Bombards). With all speed improvement upgrades (Inca), the German Spy is the melee infantry with the highest speed, 9.375.

Upgrades Edit

The Spy is automatically upgraded in the Industrial Age and the Imperial Age.

Industrial age up +25% hit points
Imperial age up +50% hit points

Civilization changes Edit

Further statistics Edit

Unit strengths and weaknesses
Strong vs. Heroes, mercenaries, native warriors
Weak vs. Everything else
Hit points Infantry Breastplate Infantry Breastplate (+10%)
Thin Red Line Thin Red Line (+20%, British only)
Cree Tanning Cree Tanning (+5%)
Maya Cotton Armor Maya Cotton Armor (+20%)
Navajo Weaving Navajo Weaving (+5%)
Attack Carib Kasiri Beer Carib Kasiri Beer (+10%)
Mapuche Tactics Mapuche Tactics (+50% siege attack)
Zapotec Cult of the Dead Zapotec Cult of the Dead (+20%)
Yoga Yoga (+5%)
Master Lessons Master Lessons (+10%)
Speed Military Drummers Military Drummers (+10%)
Tillys Discipline Tilly's Discipline (+20%, Germans only)
Inca Road-building Incan Road-building (+20%)
Apache Endurance Apache Endurance (+5%)
Sight Town Watch Town Watch (+2)
Creation speed Standing Army Standing Army (-25%)
Inca Chaquis Messengers Incan Chasquis Messengers (-25%)
Train cost Mapuche Ad-mapu Mapuche Ad-mapu (-10% coin cost)
Penalties Thin Red Line Thin Red Line (-25% speed, British only)
Coffee Trade Coffee Trade (-10% speed, Dutch only)
Tillys Discipline Tilly's Discipline (+10% cost, Germans only)

Home City Cards Edit

Trivia Edit

  • The Spy is something of a favorite of the Ottoman AI in Random Map games.
  • Even though the Spy's icon shows a revolver, it always uses a dagger instead.
    • The aforementioned revolver is fully modeled and animated in the game files, and can be enabled via modding. The reason for making the Spy a melee unit is unknown.


"For as long as there have been presidents and kings, governments have enlisted the aid of individuals for espionage. During the turbulent seventeenth and eighteenth centuries, spies were used by various governments to uncover secrets and identify opportunities for attack. Spies were known to use a variety of tools and technologies, such as invisible ink and secret codes. The fledgling government of the United States of America found itself embroiled in multiple assaults by loyalist spies - including secret messages sent to agents of the crown by William Franklin, Benjamin Franklin's own son!"

Gallery Edit

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