Comment by the_af

Agreed that arguably no strategy could have helped them against the Soviet Union, it was a major blunder going to war with them.

But the Nazis self-sabotaged constantly. The Panzer IV and the Stug III (with the outdated Panzer III chassis) were arguably the closest standard for armor, but they were constantly diverting effort to alternative platforms that were too complex to mass produce and maintain. And the same for other weapons.