To what would you assign their disturbing success?

I have to ask: What success? They did typical fascist bullshit: They had an economy so bad they had to invade new countries just to loot them to pay for their horrific economy. They picked fight after fight of the smallest kids in the neighbourhood they could find until they met those kids big brothers and sisters. They required fucking slave labour to try to meet their wartime goals because they grossly underestimated just about every single facet of running a country. They privatized state-owned industries, crippling longterm wealth for their people, they instituted tariffs (sound familiar?). Pay remained as bad as they it had been in the depression because while their wages were raised, they were forced to constantly work overtime for no additional pay. Their military was the majority of their economic spending, and they used deficit spending because they were going to literally plunder the countries around them to pay for it. Sound like solid long-term planning? They killed or jailed anyone in the trade unions, and due to their insane tariffs and you know, generally being the worst people in history, lacked incoming trade so things like poultry or clothing was in short supply for the average person.

Then it took thirty five days for the Nazi German army, along with the Serbian and Soviet armies, to conquer Poland. For every success in the early war they had embarrassing fumbles. They lost entirely because of how fascists work: they need to invade more countries to pay for their insane military spending, make bigger and bigger enemies, then get beat by those enemies, then later people claim they ‘could have if…’

Yeah, they could have done just fine if they hadn’t been fascist. All of their failings fall to being fascist.

And the first world war, are you kidding me? Are you seriously suggesting their insistence on investing in overseas colonies while fighting against the British was a brilliant plan? In both wars they were led by colossal morons who constantly underestimated their opponents, while in the second world war in particular having the worst spy agency of any nation. Their insistence on torturing, raping, and murdering everyone they came into contact with meant they just got the answers they wanted to hear, instead of the actual truth, and were constantly on the back foot. Their evil, cruel, and twisted nature was their own downfall; the insistence of their superiority, as you are doing now, is the very reason they failed.