The pivotal battle that decisively turned the tide in favor of the Allied forces in World War II was the Battle of Stalingrad, fought from 1942 to 1943. This brutal confrontation marked the first major defeat of the German Army, halting their advance into the Soviet Union. The Soviet victory not only boosted Allied morale but also began a series of offensives that ultimately led to the liberation of Eastern Europe. Stalingrad is often cited as a turning point in the war, showcasing the strength and resilience of Soviet forces, shaping the course of the remainder of World War II.