Croma Venture — Joel Shepherd

Upon the ancient drysine moon/city of Defiance, the UFS Phoenix is being rebuilt, but her crew cannot do so in peace. Parren factions jostle for control of not only Defiance, but of the drysine data-core that Phoenix won at such an awful price. But the parren do not lay sole claim to that ancient knowledge, and within the bowels of the machine-city, something long-dead is awakening.  

While aliens battle, Captain Debogande struggles to decide his next step. Human emissaries beckon him home, while a terrible new threat drives him toward the far edge of Spiral space. There live the croma, locked in a titanic struggle against the reeh, a species more terrifying than any yet faced by humanity. And holding perhaps the key to humanity's salvation are a small force of freedom fighters, waging a hopeless battle against impossible odds, having waited a thousand years for just such a saviour as the UFS Phoenix....