When it comes to military ranks I get rather confused sometimes. Often I just want to make up new names for the various ranks but… I doubt I’d be able to keep imaginary ranks any more sorted in my head than I am real ones.
So, here are some of the military ranks used in various places (and I will admit to this list being rather “white” -but it’s mostly because there are far too many countries to list the equivalencies across them all and so I stuck with more “common” ones.)
Fantasy worlds come in many varieties, from the “hard core” medieval-simulation school to the more fanciful realms of high fantasy, with alabaster castles and jewelled gardens in the place of the more traditional muddy squalor. Despite their differences, these share a vital common element: ordinary people. Most realms of fantasy, no matter how baroque or magical, cannot get by without a supply of ordinary farmers, merchants, quarrelling princes and palace guards. Clustered into villages and crowding the cities, they provide the human backdrop for adventure. (S. John Ross)
If you’re looking for this sort of information then you’re going to be most likely to find Ross’ original “Medieval Demographics Made Easy” or one of the numerous articles and generators based on his work. For example, this particular one seems to be of a slightly higher quality than some of the others out there -and I just like how it looks better.
Still, if you want to do the work yourself, but are just lazy enough that you don’t want to read the entire Medieval Demographics Made Easy article, then allow me to distill it for you.