A Call To Battle - The Humal Sequence, #3

James Hamilton was dead. Killed in a failed mission to secure scientific help to find a way to defeat the alien invaders. For those who have escaped, survival is a priority. Pursued by both the aliens and the Imperials, they struggle to continue the fight and to follow the slim leads they had uncovered. But time is growing short. Walsh, the leader of the alien invaders, grows tired of the game of cat-and-mouse he is playing and his followers grow increasingly restless at his lack of results.
If he is unable to deal with the threat that the renegade group of humans represent, he will be forced to give his people what many of them desire above all else. The one thing that Hamilton's group fears the most. The utter destruction of human civilization.