What I was shooting for was a more "what if it happened" not a "what if, could it happen".

I know that just across the river where I live is Nitro, WV a place named after the fact it produced explosives for WW2, and 10 miles from here is Ordnance Park also named for a plant that turned out ammunition and both could have easily been destroyed with a car bomb and the only local defenses was one AAA emplacement on the hill above Charleston.

So what I was getting at was if the US could not flex its industrial might, what would D-Day have looked like, or would it have even have happened.

As for Germany invading Russia, in my opinion that ranks in the top of Hitler's colossal blunders.