How did Europe respond to Hitler attacking the Soviet Union

With 134 divisions at full fighting strength and 73 more divisions for deployment behind the front, German forces invaded the Soviet Union on June 22, 1941, less than two years after the German-Soviet Pact was signed. Three army groups—including more than three million German soldiers, supported by 650,000 troops from Germany's allies (Finland and Romania), and later augmented by units from Italy, Croatia, Slovakia and Hungary—attacked the Soviet Union across a broad front. This front stretched from the Baltic Sea in the north to the Black Sea in the south.

Explanation:

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