Army Group Don
The Soviet Operation Uranus broke through the Romanian armies on his flanks, cutting off the 6th Army inside Stalingrad. Suggesting retreat, Weichs fell out of Hitler’s favor. Consequently, parts of Army Group B were taken away from the command of Weichs and incorporated into a new "Army Group Don", led by Manstein. Later in February, the remaining part merged with the Don Group into a newly reinstated Army Group South, also led by Manstein. Weichs was relieved of command.