Hi,
In the Mechwarrior game I run I was forced to comeup with a way to come up with the defending forces on a random planet. Since I had to do this for myself I decided to share so you won't have to do the work.
It was recommended that I place my PDF (Planetary Defense Force) document in Non-Canon units.
It is intended to be used by beginning and veteran GM for a RPG campaign or for creative scenarios for unit games.
So take a look and see if it will help you in your games
Hamilcar Barca