Wraiths Of War

From publisher blurb:

As Allied forces prepare for an imminent invasion, an isolated Axis unit stationed along the beaches of Normandy has gone silent. Whispers of shadowy figures moving under the cover of night, soldiers disappearing without a trace, and strange symbols carved into bunkers have fuelled a growing sense of dread. The Shadum Collective has arrived, operating in the dead of night, manipulating both mind and flesh. Your mission is to uncover the truth behind these disappearances, eliminate any Shadum operatives, and survive the unseen horrors stalking the coastline.