This is the category for variants: https://www.axisandallies.org/forums/category/13/other-axis-allies-variants
You can also use the search box for Barbarossa.
Now that we have new active forum admins, can we get a renaming of the Axis and Allies 2nd Edition forum to something a little less specific (flies in the face of 1st Ed owners) and less confusing (sounds similar to the current 2nd Edition A&A games)… maybe rename it “Axis and Allies Classic” or “Axis and Allies 1980s”… something other than 2nd Edition?
For reference:
I prefer the words A&A Milton Bradley edition
@Imperious-Leader I think it’s semi-officially Classic. The A&A Wikipedia mentions it and I think it references the Larry Harris Game Design site.