 Pilots of the XIX Tactical Air Command claimed another eight.In the face of the 10th Armored Division's drive, the word to the westernmost units of the XC "Korps" to begin falling back went out late on the 20th, and when the 42nd Division—in the mountains on the left wing of the VI Corps—launched a full-scale assault against the Siegfried Line late the next day, the attack struck a vacuum.Soon after dawn the next morning, 22 March, a regiment of the 42nd cut the secondary highway through the Pfaelzer Forest.