Ferdinand Porsche reached the rank of "SS-Oberführer". During the war, Porsche was further decorated with the SS-Ehrenring and awarded the War Merit Cross. As the war progressed his proposed solutions to new developments became more complex and Ferdinand Porsche gained a reputation in certain circles as a "mad scientist" especially with Albert Speer (mainly due to his new found affinity for "pointy" designs). A new city, "Stadt des KdF-Wagens" was founded near Fallersleben for the Volkswagen factory, but wartime production concentrated almost exclusively on the military Kübelwagen and Schwimmwagen variants. Mass production of the car, which later became known as the Beetle,
Wehrmacht forces for the Ardennes Offensive army was made up of the I SS Panzer Corps, commanded by General Hermann Priess; this corps included the 1st SS Panzer Division Leibstandarte SS Adolf Hitler, 12th SS Panzer Division Hitlerjugend, 3rd Panzergrenadier Division, and the 12th and 277th Volksgrenadier divisions. The I SS Panzer Corps also included a number of ad hoc vanguard units, including Kampfgruppe Peiper (forming part of the 1st SS Panzer Division), which contained a panzer battalion (72 mixed Panzer IV and Panther tanks) from the 1st SS Panzer Regiment, the 501st SS Heavy Panzer Battalion (45 Tiger Is) and the 3rd SS Panzer Grenadier