This is Aeris' KR Civ game calculator.
You enter the name of your faction, in caps (e.g. Linirea or Dark Forces) and the unit type.
This will bring up a menu detailing the abilties of each combatant. Checkmark which abilties apply in the situation (if they're researched and whether they apply).
Then click submit under both menus, and finally calculate to perform final calculations. Calculations between different sets of units require a page reload, but a single duel may be recalc'd with multiple abilities.

Abilities in Effect