Book 4 of the Incarnations of Immortality series. This one we follow Mars (war) and out of the books so far, this one has the most involvement of Satan as we travel through Hell. Overall, a fun look at the various beliefs and religions. Also, a fun line drawn to the Book of Five Rings. It has been a long time since I have read it and am tempted to go back and revisit it. Both it and The Art of War have been referenced in this series and both are classic texts that are cool for the author to weave in. Overall a solid read and interesting look at this aspect.