The space warfaring is interesting and could be done for Freespace 2. And there isn't too many classes of ships (i don't know the english names, i'll try to translate them from my native languaje). We have the Crossbow class carrier, they are flagships too. The Javelin class destroyer, less big and more manoeuvrable and the Kindjal class fighters. I can't remember anymore about the League of Nobles (their capitol planet is Salusa Secundus). And about Omnious (the machine's main computer that makes copies of itself for the rest of planets under its control, the main Omnious is on Earth), the machines have big and small ships too, and they have the powerful Titans, originaly humans that toke control of the Human Empire thousand years ago and lost it by Omnious, their own creation. Now they serve under Omnious' orders only for convenience, not loyalty, wainting the right time for their own rebelion against Omnious. They are in essence brains inside bottles, and they can mount powerful war platforms for ground, air and space combat. I can't remember anything else, i've read the books one year ago. The weapons are projectile based, mass accelerators. Humanity uses explosive bullets fired with cannons. The machines use penetrating weapons in space warfare, and slashing weapons, bio weapons, flamethrowers and things like that to kill people and soldiers in ground.
