Keyword rules such as Field Square, Light, Large, Brigade, Caracole and Dragoon modify units.
How it works
Field Squares are never flanked but cannot move after a Ready facing change; Light treats Very Difficult as Difficult; Large removes Wear on each 5+ when Resisting; Brigade units of one regiment can share a single Order Card and activate sequentially, though a reaction by one reveals the shared order; Extended Arc lets a unit fire from side Centres; Dragoons only shoot with Fire!. Weapon rules: Pikes, Halberds, Firearms.
A single Order Card can be used, if so desired, for all or some of the units of the Brigade.