Upgrade Costs & Formulas

Hand-to-Hand

H2H starts at level 0 and reaches level 20. Level 1 costs 100,000 gold; each following level costs twice the previous level. It has separate configurable rates for untrained and trained soldiers, plus a Special Forces rate.

• Untrained multiplier = 1 + level × 1/100.
• Trained attack/defense multiplier = 1 + level × 5/100.
• Special Forces multiplier = 1 + level × 25/100.

These bonuses are linear, not compounded. Spies and weapon power receive no H2H bonus. An untrained soldier still starts at 10% of normal soldier base strength; H2H multiplies that 10% contribution.

At H2H level 10: untrained base contribution × 1.1; trained attack/defense base × 1.5; Special Forces base × 3.5.

Special Forces Strike & Defense

Each costs 10,000 gold and consumes one untrained soldier. H2H level 1 is required. Each has 100 base strength. Strike adds only to Attack; Defense adds only to Defense.

Special Forces contribution = soldier count × 100 × (1 + H2H level × 25/100)

No weapons, ordinary skill multipliers, integrity or race bonuses apply to this contribution. They earn no income and contribute no spy strength. They can die during combat at their role's casualty rate, reduced by Combat Medicine. Untraining returns them to the untrained pool without a gold refund.

One shared global limit: Strike and Defense combined across every account may use 1% of total active Battlefield army size, rounded down. All six soldier types count toward army size. Existing Special Forces on disabled accounts still occupy slots. Training converts soldiers, so it does not increase total army size or create new slots.

The Army page shows capacity, used slots and availability. If army losses or disabled accounts lower the cap, nobody's existing units are deleted; new training stops until capacity is available. Bots retain their current regular-unit spending behaviour and do not automatically compete for this pool.

Combined Attack / Defense formula

floor(((trained soldiers × trained H2H multiplier + untrained soldiers × 0.10 × untrained H2H multiplier) × normal base strength + equipped weapon power) × effective skill × race bonus + Special Forces contribution)

Attack and Defense skill: full multiplier = 1.5^level. Effective multiplier = 1 + (full multiplier − 1) × integrity/100. Repairing restores the damaged skill bonus. Spy skill uses its full multiplier, without H2H or Special Forces.

Economy and protection upgrades

Income upgrades increase the base job income by one base-income amount per level. Soldier income is added, then the race income bonus applies. Treasury pays every 7.5 minutes. Unit production values in the table are before race bonuses; production and officer bonuses pay every 5.0 minutes. A commander receives 15% of each direct officer's own production, rounded down, without removing it from the officer.

Combat Medicine subtracts 5 percentage points of normal casualty loss per level, capped at 50%. Final loss is rounded down. It does not change strength.

Training prices

• Attack: 100 gold per soldier.
• Defense: 100 gold per soldier.
• Spy: 250 gold per soldier.
• Special Forces Strike or Defense: 10,000 gold each.

Equipment prices and power are listed in the Armoury. Normal soldiers equip at most one item each; strongest items are equipped first. Special Forces never equip items. Attack and Defense repairs are priced by missing integrity and the relevant skill level, subject to the configured minimum cost.