Unit Upgrades

Militia (Melee Units)
2, 1
+25% City Defense Light Swordsman (Melee Units)
5, 1
Requires Alloys
Requires Copper or Iron or Obsidian Spearman (Melee Units)
4, 1
+100% vs. Heavy Cavalry Units
Requires Smelting
Requires Copper or Iron or Obsidian Archer (Archery Units)
3, 1
1 First Strike
+50% City Defense
+25% Hills Defense
+50% vs. Light Cavalry Units
Requires Tanning Swordsman (Melee Units)
6, 1
+10% City Attack
Requires Bloomery
Requires Iron Heavy Spearman (Melee Units)
6, 1
+100% vs. Heavy Cavalry Units
Requires Steel
Requires Copper or Iron Crossbowman (Archery Units)
6, 1
1 First Strike
+25% City Defense
+25% Hills Defense
+25% vs. Light Cavalry Units
+25% vs. Melee Units
Requires Machinery
Requires Iron Skirmisher (Archery Units)
4, 1
1 First Strike
Can Withdraw from Combat (30% Chance)
Causes Collateral Damage (max. 25%)
+25% Hills Attack
+25% Forest Attack
+25% Rainforest Attack
Requires Contract
Requires Tanning Heavy Swordsman (Melee Units)
8, 1
+10% City Attack
Requires Civil Service
Requires Steel
Requires Copper or Iron Pikeman (Melee Units)
8, 1
+50% vs. Heavy Cavalry Units
+50% vs. Melee Units
Requires Companies
Requires Iron Arquebusier (Gunpowder Units)
10, 1
Requires Firearms Longbowman (Archery Units)
6, 1
1 First Strike
Can Withdraw from Combat (30% Chance)
Causes Collateral Damage (max. 30%)
+25% Hills Strength
+25% Forest Attack
+25% Rainforest Attack
Requires Commune Musketeer (Gunpowder Units)
12, 1
+10% vs. Arquebusier
Requires Replaceable Parts Rifleman (Gunpowder Units)
16, 1
Requires Ballistics Grenadier (Gunpowder Units)
10, 1
Can Withdraw from Combat (50% Chance)
Causes Collateral Damage (max. 50%)
+25% Attack vs. Rifleman
Starts with City Raider I
Requires Chemistry Machine Gun (Siege Weapons)
18, 1
Can Only Defend
1 First Strike
Can Intercept Aircraft (20% Chance)
Immune to collateral damage from Siege Weapons
+25% vs. Gunpowder Units
Requires Pneumatics Anti-Tank (Gunpowder Units)
14, 1
Can Intercept Aircraft (20% Chance)
+100% vs. Armored Units
Starts with Ambush
Requires Rocketry Infantry (Gunpowder Units)
20, 1
+20% vs. Marine
+20% vs. Paratrooper
Requires Social Services
Requires Ballistics Mechanized Infantry (Gunpowder Units)
32, 2
Can Enter Desert, Tundra, Ice
Can Intercept Aircraft (20% Chance)
Starts with March
Requires Telecommunications Chariot (Light Cavalry Units)
4, 2
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (20% Chance)
+25% Open Terrain Strength
Requires Leverage
Requires Horse Horseman (Heavy Cavalry Units)
6, 2
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (20% Chance)
-25% City Strength
+25% vs. Siege Weapons
Flank attack against Catapult
Requires Riding
Requires Horse
Requires Copper or Iron Lancer (Heavy Cavalry Units)
10, 2
Immune to First Strikes
Doesn't Receive Defensive Bonuses
-25% City Strength
Flank attack against Catapult, Trebuchet
Requires Feudalism
Requires Horse
Requires Iron War Elephant (Heavy Cavalry Units)
8, 1
Can Enter Jungle, Rainforest
Doesn't Receive Defensive Bonuses
+25% vs. Heavy Cavalry Units
Requires Generalship
Requires Riding
Requires Ivory Horse Archer (Light Cavalry Units)
6, 2
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (30% Chance)
+50% Open Terrain Strength
Requires Nobility
Requires Horse Cuirassier (Heavy Cavalry Units)
12, 2
Immune to First Strikes
Doesn't Receive Defensive Bonuses
-25% City Strength
Requires Combined Arms
Requires Horse
Requires Iron Pistolier (Light Cavalry Units)
7, 2
Immune to First Strikes
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (30% Chance)
+30% Open Terrain Strength
Flank attack against Catapult, Trebuchet, Bombard, Cannon
Requires Combined Arms
Requires Horse Camel Rider (Heavy Cavalry Units)
5, 2
Can Enter Desert
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (20% Chance)
-25% City Strength
+25% Desert Strength
+25% Semidesert Strength
+25% vs. Heavy Cavalry Units
+25% vs. Siege Weapons
Flank attack against Catapult
Starts with Desert Adaptation
Requires Riding
Requires Camel
Requires Copper or Iron Dragoon (Heavy Cavalry Units)
14, 2
Immune to First Strikes
Doesn't Receive Defensive Bonuses
-25% City Strength
Requires Biology
Requires Horse Hussar (Light Cavalry Units)
10, 2
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (40% Chance)
+25% Open Terrain Strength
+50% Attack vs. Cannon
+50% Attack vs. Artillery
Flank attack against Catapult, Trebuchet, Bombard, Cannon, Artillery
Requires Nationalism
Requires Biology
Requires Horse Camel Archer (Light Cavalry Units)
5, 2
Can Enter Desert
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (30% Chance)
+50% Open Terrain Strength
+25% Desert Strength
+25% Semidesert Strength
+25% vs. Heavy Cavalry Units
Starts with Desert Adaptation
Requires Nobility
Requires Camel Cavalry (Light Cavalry Units)
14, 2
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
+20% Open Terrain Strength
+50% Attack vs. Artillery
+50% Attack vs. Howitzer
Flank attack against Catapult, Trebuchet, Bombard, Cannon, Artillery, Howitzer
Requires Microbiology
Requires Horse Camel Gunner (Light Cavalry Units)
6, 2
Can Enter Desert
Immune to First Strikes
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (30% Chance)
+30% Open Terrain Strength
+25% Desert Strength
+25% Semidesert Strength
+25% vs. Heavy Cavalry Units
Flank attack against Catapult, Trebuchet, Bombard, Cannon
Starts with Desert Adaptation
Requires Combined Arms
Requires Camel Gunship (Helicopter Units)
24, 4
Can Enter Desert, Tundra, Ice, Jungle, Marsh, Rainforest
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Ignores Terrain Movement Costs
Can Withdraw from Combat (25% Chance)
+100% vs. Armored Units
Flank attack against Cannon, Artillery, Howitzer, Mobile Artillery
Starts with Amphibious
Requires Aerodynamics
Requires Oil War Galley (Naval Units)
3, 4
Cannot Enter Ocean, Cape (until Compass)
Can Withdraw from Combat (25% Chance)
Requires Shipbuilding Heavy Galley (Naval Units)
5, 4
Cannot Enter Ocean, Cape (until Compass)
Can Withdraw from Combat (50% Chance)
+25% Coast Attack
Requires Alchemy
Requires Shipbuilding Caravel (Naval Units)
6, 6
Cargo Space: 1 (Carries Scouts, Explorers, Missionaries, Spies, Great People)
Can Explore Rival Territory
Can Withdraw from Combat (50% Chance)
Requires Cartography
Requires Gunpowder Galleass (Naval Units)
6, 4
Cannot Enter Ocean, Cape (until Compass)
Can Withdraw from Combat (25% Chance)
+50% Coast Strength
Requires Gunpowder
Requires Compass
Requires Copper or Iron Frigate (Naval Units)
12, 7
Can Withdraw from Combat (25% Chance)
Requires Geography
Requires Gunpowder
Requires Iron Privateer (Naval Units)
10, 6
Hidden Nationality
Can Attack without Declaring War
Can Withdraw from Combat (50% Chance)
Starts with Sentry
Requires Exploration
Requires Gunpowder
Requires Copper or Iron Torpedo Boat (Naval Units)
18, 8
Cannot Enter Ocean
1 First Strike
Can Withdraw from Combat (50% Chance)
+50% Coast Attack
Requires Ballistics
Requires Thermodynamics
Requires Coal or Oil Ship of the Line (Naval Units)
15, 7
Causes Collateral Damage (max. 50%)
Can Bombard City Defenses (-8%/Turn)
Requires Measurement
Requires Iron Ironclad (Naval Units)
20, 6
Causes Collateral Damage (max. 50%)
Can Bombard City Defenses (-12%/Turn)
Requires Thermodynamics
Requires Metallurgy
Requires Coal
Requires Iron Destroyer (Naval Units)
24, 12
Can See Submarines
Can Intercept Aircraft (30% Chance)
Can Withdraw from Combat (25% Chance)
+25% vs. Torpedo Boat
+25% vs. Submarine
+25% vs. Nuclear Submarine
Defends first against Submarine, Nuclear Submarine
Requires Electronics
Requires Oil or Uranium Battleship (Naval Units)
40, 10
Causes Collateral Damage (max. 60%)
Can Bombard City Defenses (-20%/Turn)
Requires Synthetics
Requires Oil or Uranium Cruiser (Naval Units)
28, 7
Can Withdraw from Combat (25% Chance)
Can Bombard City Defenses (-16%/Turn)
Requires Engine
Requires Refining
Requires Coal or Oil Stealth Destroyer (Naval Units)
30, 12
Invisible to Most Units
Can See Submarines
2 First Strikes
Can Withdraw from Combat (25% Chance)
Defends first against Submarine, Nuclear Submarine
Requires Superconductors
Requires Oil or Uranium Missile Cruiser (Naval Units)
40, 10
Cargo Space: 4 (Carries Missiles)
Can Intercept Aircraft (30% Chance)
Causes Collateral Damage (max. 60%)
Can Bombard City Defenses (-20%/Turn)
Requires Satellites
Requires Oil or Uranium Catapult (Siege Weapons)
3, 1
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 50% damage to enemy on attack
Causes Collateral Damage (max. 40%)
Immune to collateral damage from Siege Weapons
+50% City Attack
Can Bombard City Defenses (-8%/Turn)
Requires Mathematics Trebuchet (Siege Weapons)
4, 1
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 50% damage to enemy on attack
Causes Collateral Damage (max. 50%)
Immune to collateral damage from Siege Weapons
+75% City Attack
Can Bombard City Defenses (-12%/Turn)
Requires Fortification
Requires Machinery Bombard (Siege Weapons)
5, 1
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 50% damage to enemy on attack
Causes Collateral Damage (max. 50%)
Immune to collateral damage from Siege Weapons
+50% City Attack
Can Bombard City Defenses (-12%/Turn)
Requires Gunpowder
Requires Copper or Iron Cannon (Siege Weapons)
8, 1
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 50% damage to enemy on attack
Causes Collateral Damage (max. 50%)
Immune to collateral damage from Siege Weapons
+25% City Attack
+25% Hills Defense
+25% Defense vs. Cannon
Can Bombard City Defenses (-12%/Turn)
Requires Physics
Requires Iron Artillery (Siege Weapons)
12, 1
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 50% damage to enemy on attack
Causes Collateral Damage (max. 50%)
Immune to collateral damage from Siege Weapons
+25% City Attack
+25% Hills Defense
+25% Defense vs. Artillery
+25% vs. Siege Weapons
Can Bombard City Defenses (-12%/Turn)
Requires Ballistics
Requires Iron Howitzer (Siege Weapons)
15, 1
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 60% damage to enemy on attack
Causes Collateral Damage (max. 60%)
Immune to collateral damage from Siege Weapons
+25% City Attack
+25% Hills Defense
+25% Defense vs. Howitzer
+25% vs. Siege Weapons
Can Bombard City Defenses (-16%/Turn)
Requires Flight
Requires Iron Mobile Artillery (Siege Weapons)
20, 2
Cannot Capture Enemy Cities or Units
Doesn't Receive Defensive Bonuses
Can Withdraw from Combat (50% Chance)
Maximum 70% damage to enemy on attack
Causes Collateral Damage (max. 70%)
Immune to collateral damage from Siege Weapons
+25% City Attack
+25% Hills Defense
+25% Defense vs. Mobile Artillery
Can Bombard City Defenses (-16%/Turn)
Requires Computers
Requires Oil
Requires Iron Galley (Naval Units)
2, 4
Cargo Space: 2
Cannot Enter Ocean, Cape (until Compass)
Can Withdraw from Combat (50% Chance)
Requires Seafaring Cog (Naval Units)
5, 4
Cargo Space: 2
Cannot Enter Ocean, Cape (until Compass)
Can Withdraw from Combat (25% Chance)
Requires Guilds
Requires Shipbuilding Galleon (Naval Units)
8, 6
Cargo Space: 3
Can Withdraw from Combat (25% Chance)
Requires Exploration
Requires Gunpowder Steamship (Naval Units)
12, 8
Cargo Space: 3
Can Withdraw from Combat (25% Chance)
Requires Thermodynamics
Requires Coal Transport (Naval Units)
16, 10
Cargo Space: 4
Can Withdraw from Combat (25% Chance)
Requires Infrastructure
Requires Oil or Uranium Biplane (Air Units)
12, 1, 6 Range
Can Intercept Aircraft (50% Chance)
Can Destroy Tile Improvements and Bomb City Defenses (-8%/Turn)
Can be Based on Carriers
Requires Flight
Requires Oil Fighter (Air Units)
15, 1, 6 Range
Can Intercept Aircraft (75% Chance)
Can Destroy Tile Improvements and Bomb City Defenses (-12%/Turn)
Can be Based on Carriers
Requires Aviation
Requires Oil Jet Fighter (Air Units)
28, 1, 10 Range
Can Intercept Aircraft (100% Chance)
Can Destroy Tile Improvements and Bomb City Defenses (-16%/Turn)
Can be Based on Carriers
Requires Aerodynamics
Requires Oil
Requires Aluminum Worker
2
Can Enter Jungle, Marsh, Rainforest
Can Improve Tiles
Production consumes Labourer
2
Can Enter Jungle, Marsh, Rainforest
Can Improve Tiles
Constructs Improvements +50% Faster
Production consumes
Requires Collectivism Bomber (Air Units)
18, 1, 8 Range
Causes Collateral Damage (max. 50%)
-50% vs. Water Units
Can Destroy Tile Improvements and Bomb City Defenses (-20%/Turn)
Requires Aviation
Requires Synthetics
Requires Oil Stealth Bomber (Air Units)
24, 1, 12 Range
Can Evade Interception (50% Chance)
Causes Collateral Damage (max. 75%)
-50% vs. Water Units
Can Destroy Tile Improvements and Bomb City Defenses (-24%/Turn)
Requires Superconductors
Requires Oil
Requires Aluminum Scout (Recon Units)
1, 1
Can Enter Desert, Tundra, Ice, Jungle, Marsh, Rainforest
Better Results from Tribal Villages
+100% vs. Animals
Starts with Disengage I, Reconnaissance
Requires Tanning Explorer (Recon Units)
5, 2
Can Enter Desert, Tundra, Ice, Jungle, Marsh, Rainforest
Better Results from Tribal Villages
Ignores Terrain Movement Costs
Can Withdraw from Combat (20% Chance)
+25% Hills Attack
+50% Jungle Attack
+50% Forest Attack
+50% Rainforest Attack
+50% Taiga Attack
Starts with Disengage I, Reconnaissance
Requires Cartography Tank (Armored Units)
28, 2
Can Enter Desert, Tundra, Ice
Doesn't Receive Defensive Bonuses
Starts with Blitz
Requires Synthetics
Requires Oil Main Battle Tank (Armored Units)
40, 2
Can Enter Desert, Tundra, Ice
1 First Strike
Doesn't Receive Defensive Bonuses
Starts with Blitz
Requires Robotics
Requires Oil
Requires Aluminum Submarine (Naval Units)
24, 10
Invisible to Most Units
Can Move through Impassable Terrain
Can Explore Rival Territory
Can Withdraw from Combat (75% Chance)
Targets any Galleon, Steamship, Transport first in combat outside cities
Requires Pneumatics
Requires Oil Nuclear Submarine (Naval Units)
30, 10
Cargo Space: 1 (Carries Scouts, Explorers, Missionaries, Spies, Great People)
Invisible to Most Units
Can Move through Impassable Terrain
Can Explore Rival Territory
Can Withdraw from Combat (75% Chance)
+50% vs. Submarine
Targets any Galleon, Steamship, Transport first in combat outside cities
Requires Nuclear Power
Requires Uranium SAM Infantry (Gunpowder Units)
18, 1, 1 Range
Can Intercept Aircraft (40% Chance)
+75% vs. Helicopter Units
Requires Laser
Requires Rocketry Mobile SAM (Gunpowder Units)
22, 2, 1 Range
Cannot Capture Enemy Cities or Units
Can Intercept Aircraft (50% Chance)
+50% vs. Helicopter Units
Requires Robotics
Requires Rocketry
Requires Oil