Apocalypse Theory by bret Wellman
Approx. 104,240 words.
Published on November 22, 2012.
A nuclear holocaust disrupts the flow of time, sending past, present, and future on a crash course to the same point in time. In the midst of the confusion the devil has made his move for the earth, raising a demon army that destroys everything in its path.
Now Mason Blake and his friends have to gather famous armies from history to defend the innocent from the slaughter.