opposed 2d6, use a red d6 and a d6 with another color
higher roll hits
damage = red die
armor reduces damage by 1 to 2 points
everything else: Use my OD&D FKR conversion
Simplified combat rules for OD&D, FKR style
Published
Free Kriegsspiel Revolution (always) and — OMG — stuff that has nothing to do with gaming
Darkworm Colt 