sentences:  Fighting in and around the city of Voronezh on the Don River, the Hungarian troops supported the German Fourth Panzer Army against the defending Soviet Voronezh Front.Though technically an Axis success, this pyrrhic victory fatally delayed the arrival of the Fourth Panzer Army in the Caucasus.During these operations, the Hungarian Second Army suffered severe casualties in manpower, as without adequate air and armor support all assaults were carried out by infantry units only, against skillful and determined Soviet defense.