Celebrant - Son of No Man Series, #2

The line between enemy and ally blurs. Tohmas Galanth has arrived in the north, outnumbered on every front. To survive his commitments to his besieged uncle, he must defeat the hoards, but DoomDragon is no easy foe and his battles are fought in steady retreat. To end the decade-long war, Tohmas must survive assassinations, betrayals, spies, and the crumbling morale of his trapped men. His staunchest allies will become his greatest threats as the winter looms.