The Book of the Wing — Eric R. Asher

A cryptic map. A lost coin. A threat emerges from the battlefield of the past ...Investigating clues hidden in an ancient mosaic beneath Falias, Foster and Zola are taken east to blood-soaked lands the old necromancer hoped never to return to. What awaits the battle-weary warriors in Antietam can only be described as a field of death.The Utukku who guard those sacred grounds are not alone. Yet even with the support of the Irish Brigade, the Fae armory may be no match for the enemies rising against them. If their forces fall, the last hope of obtaining the tetradrachm will be crushed. But when an enemy-turned-ally arrives to help, Bloody Lane will earn its title once more.