Remember too, that Hitler believed that the Opperation Barbarossa would be another swift victory. He was so sure of this, that he delayed the start by 5 weeks to sure up his southern flanks by invading the Balkans. After the Stalingrad debackle, yes, troops and officers were sent to the Ostfront as punnishment for poor actions in other theaters. But before that, victory over Spviet Union was viewed as Germany's greatest triumph.