The Soviets would have attacked, and given their strenghth probably would have punched a hole anywhere they chose.

Of course the Wermacht would have patched up the hole, only for it to happen somewhere else. They may have been drawn into a similar battle of Attrition or maybe another "Stalingrad" and suffered heavier losses.

And maybe Sicily would have drawn off the SS Corps and maybe other available reserves sooner.

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Whe're off to see the Wizard, the wonderful wizard of OZ - 6 Australian Infantry Div, Bardia January 1941