Death's Ecliptic - Tony Peak

Marco Morelli, a rookie marine private, botches his first op and gets transferred to the most rough-and-tumble outfit in the Merged Earth Colonies: Cygni Corps.

Though the Corps is filled with the military's rejects, Marco soon learns it's also the testing ground for a new serum that will make him and his comrades the finest soldiers in the galaxy.

He'll need it.

Rebel groups have begun unleashing vicious mutants on defenseless worlds. And a more sinister force looms behind the attacks. As the conflict escalates, it's time to power up and roll out for the Cygni Corps.