Age of Empires Series Wiki

Russian combination of Barracks and Outpost. Can defend the frontier or train infantry in groups. Also provides 5 population.
—In-game description

The Blockhouse is a military/defensive building in Age of Empires III that is unique to the Russians. It combines the functions of a Barracks and an Outpost by training and upgrading Russian infantry, attacking nearby enemies, and receiving Home City shipments, as well as supporting 5 population.


Blockhouses are resource-friendly, with Russian players only having to pay wood for a fraction of the cost required for a Barracks and Outpost. "TEAM Cheap Barracks" will reduce the cost by 15%, while "TEAM Art of War" reduces it by 10%. If both cards are stacked, Blockhouses only cost 187 wood. However, using this method, Barracks and War Academies will be much cheaper than Blockhouses, at 40 wood and 90 wood respectively, drastically reducing their economic advantage.

Due to Blockhouses' dual-role, losing them will hinder the Russian player's defense and ability to train infantry simultaneously, which can sometimes lead to them being overwhelmed easily during an attack involving siege units.

In the Definitive Edition, choosing The Logistician to advance into the Commerce Age make Blockhouses support 15 population instead of 5.


Age Unit Cost Pop.
Age II tech tree aoe3.png
Strelet icon.png 10 Strelets 375 food,
100 wood
Musketeer icon.png 5 Musketeers 280 food,
95 coin
Age III tech tree aoe3.png
Aoe3 halberdier icon.png 4 Halberdiers 200 food,
280 coin
Falconet icon.png Falconet 100 wood,
400 coin
Age IV tech tree aoe 3.png
Mortar icon.png Mortar 100 wood,
350 coin
Falconets and Mortars require the "Blockhouse Cannon" Home City Card to be trained at Blockhouses.


Age Upgrade Cost Effect
Age III tech tree aoe3.png
Frontier outpost.png Frontier Blockhouse 400 wood,
200 coin
Upgrades Blockhouses into Frontier Blockhouses (+50% attack)
Age IV tech tree aoe 3.png
Fortified outpost.png Fortified Blockhouse 800 wood,
400 coin
Upgrades Blockhouses into Fortified Blockhouses (+50% hit points, +50% attack, +100% anti-ship attack and a bombard attack with an AOE of 3); requires Frontier Blockhouse

Civilization differences[]

In the Definitive Edition, the "Castrametation" Home City Card allows the Explorer to build Blockhouses.


  • Revolting to Finland automatically upgrades Blockhouses to Frontier if they are not already for the Russians, and removes their build limit.
  • Revolting to Hungary and Romania increases Blockhouses' build limit by one with each Home City shipment.

Further statistics[]

As Blockhouses are unique to the Russians, only technologies that they have access to are shown in the following table:

Building strengths and weaknesses
Strong vs. Ships, infantry, weak cavalry
Weak vs. Artillery, Siege units
Hit points Flying Buttress.png Flying Buttress (+20%)
Attack Heated Shot.png Heated Shot (+1.5x multiplier vs. ships)
Sight Gas Lighting.png Gas Lighting (+4)
Other Iroquois league.png Iroquois League (train Iroquois Tomahawks and Iroquois Mantlets, vanilla Age of Empires III only)
Construction cost Cree Textile Craftsmanship.png Cree Textile Craftsmanship (-25% wood)
Tupi Forest Burning.png Tupi Forest Burning (-20% wood)

Home City Cards[]

As Blockhouses are unique to the Russians, only their cards and other civilizations' TEAM cards are shown in the following tables:


Age of Empires III[]

The WarChiefs[]

  • Blockhouses cannot reveal stealth enemies.

The Asian Dynasties[]

  • Blockhouses built by the Chinese by allying with the Russians at the Consulate, due to a bug, cannot train banner armies and cannot be upgraded into Frontier Blockhouses and into Fortified Blockhouses.
  • Blockhouses built by the Chinese by allying with the Russians at the Consulate have a build limit of 4.

Definitive Edition[]

  • Blockhouses built by the Chinese by allying with the Russians at the Consulate now can train War Academy banner armies, can be upgraded into Frontier Blockhouses and into Fortified Blockhouses through the Hill Castle and Mountain Castle technologies, respectively, and have a build limit of 1.
  • With update 20322, Blockhouses provide 10 population.

The African Royals[]


A blockhouse is a military building that is often fortified for protection. A blockhouse is similar to a fort, but while a fort has multiple buildings, a blockhouse has only one structure. In the New World, blockhouses were used for defense on the frontier. Russian blockhouses built along the west coast were hexagonal in shape and usually had multiple stories.