Answer:
Hitler launch operation Barbarossa
Explanation:
In 1941, Adolf Hitler launched operation Barbarossa with troops in the Soviet Union to invasion. Around three million German Solider were sent to the Soviet. It was a crucial point for the Germans to win the war as it was fought in eastern Europe. But by the defeat of the German Solider in the Soviet Union was seen as a turning point in WW II because it showed the weakness of the German.
