The Gunpowder Wizard Trilogy Comes to an End...

Field Marshal Tamas returned home to find Adro's capital in the hands of a foreign invader for the first time in its history. His son was missing, his supposed allies were not clear whether they were friend or foe, and reinforcements were weeks away.

On the front line, the Adro army had succumbed to internal strife, fighting not against the Kez invaders, but against each other. Adamat, in search of his kidnapped son, was caught in the middle of this strife. Betrayed by those he once thought of as friends, Taniel Dual Atar had to do everything he could to ensure that Adro emerged from this war in one piece.

And when the gods get involved...
In Brandon Sanderson's literary heir McClellan's rich world of technology and magic, who can stand against wizards who can control gunpowder and bullets?