On the same day, German Army Group G ("Heeresgruppe G") and Army Group Upper Rhine ("Heeresgruppe Oberrhein") launched a major offensive against the thinly stretched, line of the Seventh U.S. Army. This offensive, known as "Unternehmen Nordwind" (Operation North Wind), was the last major German offensive of the war on the Western Front. The weakened Seventh Army had, at Eisenhower's orders, sent troops, equipment, and supplies north to reinforce the American armies in the Ardennes, and the offensive left it in dire straits.