It is generally believed that this movement includes the following parts:
1. 1942 in may, the Germans swept the southwest of the Soviet union and approached Stalingrad.
Second, the massive bombing of Stalingrad by the German Air Force;
Third, the Germans invaded the city and fought on the streets of the city;
Fourth, the Soviet Red Army counterattacked and eventually encircled the Axis forces.
Axis lost a quarter of its troops on the eastern front in this battle, and it didn't recover until the final defeat. For the Soviet side, the victory of this battle marked the beginning of recovering occupied territory, and finally ushered in the final victory of 1945 against Nazi Germany in May.