Lvov–Sandomierz Offensive
On the Eastern Front, it was first used on 12 August 1944 by the Schwere Heers Panzer Abteilung 501 (s.H.Pz.Abt. 501) resisting the Lvov–Sandomierz Offensive. It attacked the Soviet bridgehead over the Vistula River near Baranów Sandomierski. The majority of King Tigers went to Wehrmacht units, while some 150 were assigned to the Waffen SS. The first Tigers II tanks reached schwere Panzer Abteilungen of both Wehrmacht and Waffen SS as early as February 1944. Only two companies of Schwere Heers Panzer Abteilung 503 (s.H.Pz.Abt. 503), equipped with Tiger II tanks (with Porsche turrets), were committed to the fighting in Normandy. Tiger II tanks of "schwere Panzerabteilung" 506 ("s.Pz.Abt." 506), saw combat during the Operation Market Garden in the Netherlands in September 1944.