Frostborn: The False King: Frostborn, Book 11 (Unabridged‪)‬

Ridmark Arban is the Gray Knight, leading the war against the malevolent Frostborn. 

After a year of battle, the war has ground to a bloody stalemate. Unless Ridmark can find new allies, the Frostborn will win through slow attrition. 

But the shadow of the Frostborn has fallen over all lands, and Ridmark might not live long enough to find new allies...

About the author: 

Standing over six feet tall, USA Today best-selling author Jonathan Moeller has the piercing blue eyes of a Conan of Cimmeria, the bronze-colored hair of a Visigothic warrior-king, and the stern visage of a captain of men, none of which are useful in his career as a computer repairman, alas. 

He has written the Demonsouled series of sword-and-sorcery novels, and continues to write The Ghosts sequence about assassin and spy Caina Amalas, the Computer Beginner's Guide series of computer books, and numerous other works.