African American Soldiers Fighting in the Ardennes Counteroffensive

American soldiers during the squeezing out of "The Bulge"

By 24 December the German advance was effectively stalled short of the Meuse.
The Germans had outrun their supply lines, and shortages of fuel and ammunition were becoming critical. Up to this point the German losses had been light, notably in armor, which was almost untouched with the exception of Peiper's losses.

https://en.wikipedia.org/wiki/Battle_of_the_Bulge#Allied_counteroffensive