Answer:
the battle of stalingrad.
Step-by-step explanation:
In the Battle of Stalingrad, Germany and its allies fought the Soviet Union for control of the city of Stalingrad in Southern Russia. Germany was defeated ,because on 19 November, the Red Army launched Operation Uranus, a two-pronged attack targeting the weaker Romanian and Hungarian armies protecting the 6th Army's flanks. The Axis forces on the flanks were overrun and the 6th Army was cut off and surrounded in the Stalingrad area. Adolf Hitler ordered that the 6th Army make no attempt to break out; instead, attempts were made to supply it by air and to break the encirclement from the outside. Heavy fighting continued for another two months. At the beginning of February 1943, the Axis forces in Stalingrad, having exhausted their ammunition and food, surrendered after five months, one week and three days of fighting.