Armoured archers are no longer considered to be light fighters. Everyone on the battlefield must be armoured to Society/Kingdom standards for Heavy Fighters. Anyone who doesn't wish to be physically struck can enter the field as a "Non-Contact", to designate this they place a Red Pheon on all four sides of their helm and are considered dead either by a touch of a weapon or by a Heavy Fighter with a Melee Weapon coming a certain distance to them(usually 10 feet) depending on each Kingdom's Law. Combat Archers are permitted to shoot blunt arrows at both heavy fighters. They are required to comply with Society heavy armour standards and use a bow with a maximum poundage of 30lb at 28 inches pull or a crossbow. Crossbow limits vary by Kingdom.
It's a lot of fun. Think of it as 'medjeeval paintball'.