The success of Operation Uranus , launched Process_start on 19 November 1942 , had trapped 250,000–300,000 troops of General Friedrich Paulus ' German 6th Army and 4th Panzer Army in Stalingrad .

Its success Achieve was a major contributor to the decision Deciding by the Army High Command Request to try the same tactic during the Battle Hostile_encounter of Stalingrad where it failed to save Rescuing the 6th Army under Paulus .