Princeps' Fury (Codex Alera)

In the acclaimed Codex Alera novels, #1 New York Times bestselling author Jim Butcher has created a fascinating world in which the people of Alera use their unique bond with the elemental forces of nature for protection. But even nature may not be enough to stave off the coming storm…
 
Tavi of Calderon, now recognized as Princeps Gaius Octavian and heir to the crown, has achieved a fragile alliance with Alera’s oldest foes, the savage Canim. But when Tavi and his legions guide the Canim to their lands, his worst fears are realized. The dreaded Vord—the enemy of Aleran and Canim alike—have laid waste to the Canim homeland. And the Alerans find themselves trapped alongside their former enemies.
 
Meanwhile, war-torn Alera rebuilds while politicians and nobles vie for power. But from the south comes the news: the Vord have come to Alera. For a thousand years, Alera and her furies have withstood every enemy, and survived every foe. But the thousand years are over...