Part 20

Learn about all unit promotions in Civilization IV, including requirements like Veteran II and Great General, and their combat bonuses.

Promotions are granted to your units after they gain experience through battles. For every level a single unit gains, you will be able to acquire more promotions. Some promotions require a Great General to lead the unit; these units will have the ability to get promotions that normal units cannot get. The abilities from different promotions stack.

Amphibious

• Requires: Veteran II
• Available to: Mounted Units, Melee Units, Gunpowder Units
• Bonuses: No Combat Penalty for Attacking from Sea, No Combat Penalty for Crossing River

Bomb I

• Available to: Siege Weapons
• Bonuses: +20% Settlement Attack

Bomb II

• Requires: Bomb I
• Available to: Siege Weapons
• Bonuses: +25% Settlement Attack

Bomb III

• Requires: Bomb II, Led by Great General
• Available to: Siege Weapons
• Bonuses: +30% Settlement Attack

Canister Shot I

• Available to: Siege Weapons
• Bonuses: +5% Attack against Gunpowder Units

Canister Shot II

• Requires: Canister Shot I
• Available to: Siege Weapons
• Bonuses: +10% Attack against Gunpowder Units

Canister Shot III

• Requires: Canister Shot II, Led by Great General
• Available to: Siege Weapons
• Bonuses: +15% Attack against Gunpowder Units

Charge

• Requires: Veteran I
• Available to: Mounted Units, Melee Units, Gunpowder Units
• Bonuses: +25% Attack against Siege Weapons

Explorer I

• Available to: Mounted Units
• Bonuses: -1 Terrain Movement Cost

Explorer II

• Requires: Explorer I
• Available to: Mounted Units
• Bonuses: +1 Visibility Range

Explorer III

• Requires: Explorer II, Led by Great General
• Available to: Mounted Units
• Bonuses: Can Use Enemy Roads, +1 Movement Range

Formation

• Requires: Veteran II
• Available to: Mounted Units, Melee Units, Gunpowder Units
• Bonuses: +25% Attack against Mounted Units

Grenadier I

• Available to: Mounted Units, Melee Units, Gunpowder Units
• Bonuses: +20% Settlement Attack

Grenadier II

• Requires: Grenadier I
• Available to: Mounted Units, Melee Units, Gunpowder Units
• Bonuses: +25% Settlement Attack

Grenadier III

• Requires: Grenadier II, Led by Great General
• Available to: Mounted Units, Melee Units, Gunpowder Units
• Bonuses: +30% Settlement Attack, +10% Attack against Gunpowder Units

Leadership

• Requires: Led by Great General
• Available to: Mounted Units, Melee Units, Siege Weapons, Gunpowder Units, Naval Units
• Bonuses: Gains +100% Experience from Combat

Led by Great General

• Requires: Great General
• Available to: Mounted Units, Melee Units, Siege Weapons, Gunpowder Units, Naval Units
• Bonuses: Free Upgrades

Looter

• Available to: Mounted Units, Melee Units, Siege Weapons, Gunpowder Units
• Bonuses: +50% Gold Yield from Pillaging

Minuteman I

• Available to: Melee Units, Gunpowder Units
• Bonuses: +20% Settlement Defence

Minuteman II

• Requires: Minuteman I
• Available to: Melee Units, Gunpowder Units
• Bonuses: +25% Settlement Defence

Minuteman III

• Requires: Minuteman II, Led by Great General
• Available to: Melee Units, Gunpowder Units
• Bonuses: +30% Settlement Defence, +10% Attack against Melee Units

Mountaineer I

• Available to: Melee Units, Gunpowder Units
• Bonuses: +15% Hills Attack, +15% Hills Defence

Mountaineer II

• Requires: Mountaineer I
• Available to: Melee Units, Gunpowder Units
• Bonuses: +25% Hills Attack, +25% Hills Defence, Double Movement in Hills

Mountaineer III

• Requires: Mountaineer II, Led by Great General
• Available to: Melee Units, Gunpowder Units
• Bonuses: +35% Hills Attack, +35% Hills Defence, Can Attack Multiple Times per Turn

Navigation I

• Available to: Naval Units
• Bonuses: +1 Visibility Range

Navigation II

• Requires: Navigation I
• Available to: Naval Units
• Bonuses: +1 Movement Range

Navigation III

• Requires: Navigation II
• Available to: Naval Units
• Bonuses: +1 Movement Range

Ranger I

• Available to: Melee Units, Gunpowder Units
• Bonuses: +20% Forest Attack, +20% Forest Defence, +20% Light Forest Attack, +20% Light Forest Defence

Ranger II

• Requires: Ranger I
• Available to: Melee Units, Gunpowder Units
• Bonuses: Double Movement in Forest, Double Movement in Light Forest, +25% Forest Attack, +25% Forest Defence, +25% Light Forest Attack, +25% Light Forest Defence

Ranger III

• Requires: Ranger II, Led by Great General
• Available to: Melee Units, Gunpowder Units
• Bonuses: Can Attack Multiple Times per Turn, +30% Forest Attack, +30% Forest Defence, +30% Light Forest Attack, +30% Light Forest Defence

Skirmisher I

• Available to: Mounted Units, Melee Units, Gunpowder Units, Naval Units
• Bonuses: +10% Withdrawal Chance

Skirmisher II

• Requires: (Source incomplete)