Spartan Games has released the Firestorm Taskforce rules and stats as free PDFs on their website. Firestorm Taskforce is the slim and fast-playing version of Firestorm Armada (and is arguably a game in its own right).
On the website you’ll find PDFs of the rules as well as stats for all of the core factions plus the allied factions and the marauders, too.
Taskforce is an interesting take on Firestorm, and some say it’s actually better than Armada for larger games! Why not take a look and try it out?