Doing that will give the Soviet Union time to train they soldiers and officer, produce more tanks and better designs. Hitler was right to attack and taking the Balkans was a required thing, Yugoslavia was needed to for transport and to protect the flanks while Italian was in danger of losing to the Greeks and British.

I'm still studying but I *still* hold the "insane belief" that Germany was capable of victory in May 1944.

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"In war there are no excuses. Victory needs none, Defeat allows none."