Codex Alera
Reading Order.

For centuries, the people of Alera have relied on the power of the furies to protect them from outside invaders. But the gravest threat might be closer than they think.Tavi has escaped the Calderon Valley and the mysterious attack of the Marat on his homeland. But he is far from safe, as trying to keep up the illusion of being a student while secretly training as one of the First Lord's spies is a dangerous game. And he has not yet learned to use the furies, making him especially vulnerable.When the attack comes it's on two fronts. A sudden strike threatens the First Lord's life and threatens to plunge the land into civil war. While in the Calderon Valley, the threat faced from the Marat is dwarfed by an ancient menace. And Tavi must learn to harness the furies if he has any chance of fighting the greatest threat Alera has ever known

The power-hungry High Lord of Kalare has launched a rebellion against the aging First Lord, Gaius Sextus, who with the loyal forces of Alera must fight beside the unlikeliest of allies - the equally contentious High Lord of Aquitaine. Meanwhile, young Tavi of Calderon joins a newly formed legion under an assumed name even as the ruthless Kalare unites with the Canim, bestial enemies of the realm whose vast numbers spell certain doom for Alera. When treachery from within destroys the army's command structure, Tavi finds himself leading an inexperienced, poorly equipped legion - the only force standing between the Canim horde and the war-torn realm.

After two years of bitter conflict with the hordes of invading Canim, Tavi of Calderon, now Captain of the First Aleran Legion, realizes that a peril far greater than the Canim exists-the mysterious threat that drove the savage Canim to flee their homeland. Now, Tavi must find a way to overcome the centuries-old animosities between Aleran and Cane if an alliance is to be forged against their mutual enemy. And he must lead his legion in defiance of the law, against friend and foe--or no one will have a chance of survival . . .

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...

The next book in the thrilling New York Times bestselling series.For years he has endured the endless trials and triumphs of a man whose skill and power could not be restrained. Battling ancient enemies, forging new alliances, and confronting the corruption within his own land, Gaius Octavian became a legendary man of war—and the rightful First Lord of Alera.But now, the savage Vord are on the march, and Gaius must lead his legions to the Calderon Valley to stand against them—using all of his intelligence, ingenuity, and furycraft to save their world from eternal darkness.