The regiments are tailored to their game Beneath the Lily Banners. These rules are set at a time where the pike was being phased out and all musket regiments were beginning to dominate the battlefield. In the rules a unit with a pike company is represented by a single rank of pikes placed behind the command stand (or moved to the front to represent the repel-cavalry formation). Therefore you don't need as many pike figures as you would for ECW or 30YW etc.