German troops began a withdrawal from the Ardennes Forest in the Belgian-German border region. Meanwhile, in retaliation for the Malmedy massacre, US troops massacred 30 SS prisoners at Chenogne, Belgium. In the air, the German Luftwaffe launched Unternehmen Bodenplatte, which consisted of 800 aircraft conducting low-level strikes against snow-bound Allied airfields in the Netherlands and Belgium. They destroyed 220 aircraft, mainly on the ground, but lost 188 aircraft of their own, as well as many experienced pilots who could not be replaced. This operation failed to achieve its goal of wiping out Allied air power based in the region
