The Shattered Skies — John Birmingham

"A group of intrepid heroes must rebuild and protect civilization after a long dormant enemy shattered their once-peaceful empire in this thrilling sequel to The Cruel Stars.

The Sturm, a group of ""species purists"" intent on destroying any human with genetic or cybernetic enhancements, returned from the far reaches of Dark Space to strike a devastating blow against humanity. Though their victory seemed inevitable, a small group of reluctant heroes managed to beat back the invading force. Now left with the remains of a crippled civilization, they must work together to rebuild--and to stand guard, in case those weren''t the only enemies hiding in the dark..."