Watch on the Rhine — John Ringo; Tom Kratman

FIGHT EVIL WITH EVIL

The invaders are coming -- the Posleen, a seemingly unstoppable horde who have conquered one star system after another, literally feeding on their conquests. Earth's dubious allies, the Darhel, have given the humans a number of highly advanced technological devices, including a process for rejuvenating trained and proven soldiers who otherwise would be too old to fight. Rejuvenation may give a critical edge, since to survive, the Earth must use every resource at hand. Every resource .. .

The Chancellor of Germany finds he must tap the one group he had sworn never, ever, to recall: the few remaining survivors of the Waffen SS. Has he made a devil's bargain, or is this a chance for the reviled SS at last to fight the good fight? And, perhaps, gain redemption . . . ?