When Patton found his line dangerously thin along the Moselle River in September 1944, the Ghost Army rushed from Paris and kept the Germans at bay for a week by posing as the 6th Armored Division.

In September 1944, the Ghost Army helped fill a gap in Gen. George Patton's line during an attack on the Germans in the French city of Metz. “They end up holding this part of the line for eight ...