“Military Sci-Fi; Old empire crumbles after cost of defeating ancient enemy. New upstart confederations feed off of leftovers and create new enemies (think cold war class conquerors) Rouge special ops teams sent on do or die (lots of die) assignments to free home world.”
Star Raider
Once, the starship was sleek and new, a raider for the Remus Navy. Then, the Coalition invaded, smashed the fleet and conquered the homeworld. The battered raider barely escaped to wander the galaxy, helping its centurion eke out a living as a bounty hunter.
Now, bad luck strikes Centurion Tanner. On Calisto Grandee, officials jail his crew, impound his ship and get ready to send him to a prison planet. But in steps a soldier, offering to hire Tanner. The soldier needs a ship now in a secret war against an extinction level threat.
To free his crew and ship, Tanner accepts the mission. They only have a few weeks to reach the galactic rim, sneak through the most heavily defended star system in the galaxy and kill a thing no human weapon can slay.
The race for human survival has begun.