The Shadows — W.J. Lundy

Jacob is a soldier in a war against a new type of enemy. Trained in the basics of ground combat and tossed a weapon, he is now on the front lines of the global conflict. He must face the Delta Horde or risk his family's eviction to the refugee camps. Inexperienced, Jacob discovers he has something far more valuable than weapons and armor: his fellow soldiers at his side. As a team they struggle to survive battles and an enemy that would ruin a man standing against them alone. Only together can they find a way to end the reign of The Darkness.

This is a novel of horror, courage, and resiliency in the face of an unspeakable enemy.