At 05:30, approximately 1,900 German artillery pieces opened fire across an 80-mile front from Monschau to Echternach, beginning Unternehmen Wacht am Rhein. Three German armies, roughly 250,000 men and 700 tanks, struck six American divisions holding 120 kilometres of the “Ghost Front.” The surprise was total. German searchlights created artificial moonlight as infantry emerged from the morning mist.
Despite achieving complete tactical surprise, the Germans failed to reach first-day objectives anywhere on the front. Small groups of American soldiers, often in isolated outposts, fought desperate delaying actions that disrupted the operational timetable. By evening, Eisenhower had recognised the assault as a major offensive and begun releasing reserves. “The story of December 16, 1944, is the story of a series of apparently disconnected small unit actions.”