This is a story of good versus evil. Angels and Demons so to speak are the main characters in this story. However they aren't the traditional Angels and Demons. It is the Army versus the enemy, but again not the traditional Army or the traditional enemy.
Jonah Mason is described by some as an Angel killer. And reality of the story Angels are the enemy, the minions of evil. Jonah may not be immortal but he did fight for the Roman Empire. He and his army self find themselves in combat against one of the enemy.
In this story there is a transition from the normal combat of the of the enemy and the Army to a more virtual reality type of combat. In the story virtual is more reality and can prove deadly in combat with the enemy.
I enjoyed the premise and the characterizations. I think there could have been more back story provided better understanding of the plot.
I recommend the book.
Body of work of H. David Blalock
Web Site: http://www.thrankeep.com/