Destroying everything else, retreating Germans left stores of alcohol behind untouched hoping that advancing Russian troops would become too drunk to fight. Instead, the alcohol numbed the Russians to the barbarism they would deliver in vengeance.
I've never heard that.
What an idiotic idea. Only someone who never drank with Russians could come up with it. On the way to passing out, most Slavic people go through a mean drunk phase. Enabling that in an invading army is madness.