William Johnstone 
Death In The Ashes [EPUB ebook] 

The war against the Night People continues as Ben Raines and his rebel army set forth on a scorched-earth policy, systematically destroying the favorite living places of the cannibalistic mutants–the once great cities of America–and forcing the half-human, half-hellborn monsters into the open. As the rebel mop-up team pushes through the smoking rubble that once was Dallas, Ben Raines comes within a hair’s breadth of being shot and killed. The death squad is dispatched by none other than Matt Callahan, a warlord headquartered near Custer’s battle-field in Montana. Like Ben, Matt was a writer before the Great War, but unlike Ben, Matt has turned to outlawing. Now Ben must go north, and the two old friends will face each other in hand-to-hand combat–and one more bloody last stand will be fought on the banks of the Little Big Horn to decide the fate of freedom’s cause.