Hey just gonna point out that invading Russia in the winter would actually be the second best season to do it, since Russia has 4 seasons spring (mud), summer, fall (mud), and winter (really cold) frankly speaking the mud is what fucked the Nazis over more than anything else since it bogged them down completely.

Napoleon was the one who basically got shit canned by the winter since modern logistics didn't exist yet and the Russians destroyed all the food while in retreat allowing winter to finish off the attrition.