There are 3 books in The Apocalypse Crusade series.
The Apocalypse Crusade series does not have a new book coming out soon. The latest book, The War of the Undead Day 4 (Book 4), was published in August 2017.
The first book in The Apocalypse Crusade series, The War of the Undead Day One, was published in December 2014.
The Apocalypse Crusade series primarily falls into the General Fiction genre.