Battle of Stalingrad in 1942-1943 that was fought between Germany and its allies and USSR within the World War II. This battle is considered one of the most decisive in the second World War, as it worsened the situation of the Wehrmacht and allowed the Soviet Red Army to start counterattacking all over the Eastern Front. This battle is also symbolic, as it was one of the rare battles where the egos of two rulers - Hitler and Stalin clashed.