This site belongs to Merovech, formerly of Ceti, Epislon & Fenix; now resident of Gamma, Helion and Ixion.
There are basically three formulas you need to calculate unit-on-unit combat. In the three examples below, “Power” refers to the Attacker, “Shield” and “Armour” refer to the defender.
When Power is lower than Armour (e.g. Fighters v. Cruisers), but higher than Shield.
Armour / (Power - Shield) = Number of Attackers to Kill One Defender
When Power is greater than Armour (e.g. Dreadnought v. Cruiser)
(Power - Shield) / Armour = Number of Defenders Killed per Attacker
When Power is less than Shield (except those Ion units that have 50 percent of their power bypass shields).
Armour / (Power * 0.01) = Number of Attackers needed.
