I've had my first comment back, which has kindly suggested some research into various 18th Century states' uniforms, for variants on my Prussians. It sounds like quite a good idea, as the existing paintwork is a couple of years old and pretty uniform - every infantryman has red cuffs & collars, with white waistcoat & breeches. As I will have to paint some figures regardless, it may be a good excuse to redo a few units and add some regimental character. I think that I'll do some research, and begin drawing up my plans.
To update things, my Prussian infantry will represent the military power of the kingdom of Aschenbach, one of my imagiNations. This kingdom is my Prussian proxy, being generally North German, Protestant, Militaristic, fond of stern moustaches, etc.
They will be squaring off in near-perpetual warfare with the Rheinstadt der Luftberg, their neighbours (South German, Catholic, cultured and cosmopolitan, high-quality confectionery, etc.) Details of the Luftberg army will follow, but for now I plan to flesh out some of the personalities and details of the Aschenbach state. For now, I've added a picture of the Aschenbach flag to decorate the page a bit. It's similar to the Prussian flag, but I've adopted the stag as my chosen state heraldic symbol (my own name's heraldic symbol, apparently!)
More to follow!