 Complete the following phrase:  In January 1943, the 320th Infantry Division was called to service on the Eastern Front in response to the imminent defeat of the 6th Army in Stalingrad. Shortly before its departure, the divisional commander was replaced by Georg-Wilhelm Postel on 2 December 1942. The division was first sent to the Eastern Fronts southern sector and saw first combat at Izium in early February, which was an intro to the Soviet defeat at the 