Jamestown: Book 2 of The Shadow War Chronicles

The Shadows have come into the light…
Captain Blake Campbell of the Vega class destroyer Revenant and her crew might be unorthodox, but they have a reputation for getting the job done.
A year after the adventure that led them to the ancient alien Artificial intelligence boxes and the creation of the Rangers. Blake and crew travel back to Croatoan and what they find will change the course of the galaxy forever. The empire and their shadow overlords are targeting humanity, the Rangers along with the newly liberated Croaton people must race across galaxies and save humanity from extinction from the malevolent masters of the empire.