 This 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 Battalion.Under the 12th SS Panzer Division was Battle Group Kuhlmann, containing the 1st SS Panzer Battalion (80 tanks) and the 560th SS Heavy Panzer Battalion.