Warrior's Wrath: Book Four of the Warrior Chronicles

The living embodiment of war, Cort Addison is a 21st century warrior molding 24th century humanity into the spear that will protect the Ares Federation. The Tapon, harboring a millennia-old grudge against Cort’s alien allies, use force and subterfuge to take back their ancient homeworld. Racing toward retribution, Cort learns a recently vanquished species has escaped their prison world and is swarming through Ares Space. Cort must find a way to save his family and his allies from enemies hellbent on revenge.