As per the discussion in the Rules Draft thread, should we keep this rule? Here is how it reads at the moment:

4.4 – Historical Army Composition: Only historical armies can fight battles (ahistorical stacks can be used for transport). No more than half the units in an army can be mercenaries. Crusader mercenaries (crusader sergeants, crusader knights, pilgrims, fanatics, great crosses, etc.) do not count as mercenaries. Crusades are exempt from restrictions on the number of generals. The maxima for each unit type by the number of units in the stack is:


Unit Type definitions (units can qualify for multiple Types):
Knights: All units with “Knight” in their name plus all heavy cavalry.
Cavalry: All mounted units.
Missile Inf: All dismounted ranged attackers, except artillery units and javelin units.
Heavy Inf: All heavy infantry units.
Other Inf: All unmounted units which do not qualify as Missile Inf or Heavy Inf.
Artillery: All units produced from the siegeworks and gunsmith line of buildings.