I played my first game using cards from the Men of Hawkshold(Humans) and the Orc Army of the Battleground Fantasy Warfare, and employed 5mm dice in green, blue, yellow and red to mark the ranks and strength. Green “5” denoted a full strength unit of twenty figures; a blue “4” meant a unit of fourteen figures; a yellow “3” stood for a unit of eight figures; and a unit with a red “2” only had two figures left. I had some Litko “Disordered” markers to mark that condition, and think you could employ a similar system to play these rules regardless of your basing system.
I really like these rules, and cannot wait for the next expansion providing for formations such as phalanx, shield walls and skirmishes. With those formations, I think “Oathmark” could serve as a great middle complexity system for fantasy as well as historical ancients, dark ages and medieval. I have not employed the magic system as of yet, but I get the impression that it does not overpower the maneuver and melee aspects of the rules.