As far I understood, the war is on many levels in the cosmic sense of the term.
After the Gods - who are extraterrestrial civilization - have created the modern humanity and returned on their planets in the constellation of Orion, the reptilian group assisted by grays - another civilization attacked (cursed) them and introduce jews on Earth to sink us by means of lies and plots, drawing andrapods in their fold to build an army of their own against the braves - making us each other's enemies.
While the Gods work to expel reptilans we have to expel jews. Reptilians are little parasites for the Gods but are surely tenacious.
Greek mythology say they fought Titans long time ago... let's admit now it's reptiles.
All jewish maneuvers are psychologic/psychic hacking and seem led by grays. With such alien methods, the only way for humanity to stop that is simply to stop to listen their marxo-leftist bullshits which are calls to psychically fuel them. For this we have to be sufficiently mentally and psychically mature, evolved.
But only few percent of humanity reach this level before living other things that the human experience, it's complicate.
Surely Hitler was aware that the plan failed, but there is traitors in the right places since long on Earth, and they maintain the disinformation which permits to them to maintain their place.
Thanks to Hitler's intervention, the whole humanity has observed the power of suggestion of the jews, the flavor of their lies, their inconceivable wickedess and their destructive madness over one century now - the time to assimilate for the masses.
Why all failed ? it's long and difficult to create something but it's easy to destroy. Chaotic forces are strong.
The Gods are not magic genii like in fairy tails, they can help us but we must be able to "open them the door", and no many do.
If the whole humanity were close to the Gods, all of these would never have happened. Jews would be considered as the retard they are, and naturally expelled in their corner by every nations. In fact it's happened 109 times, but they could start again in the neighboring region.
You can also have a look on the karma of Whites during the middle age :
Catholics and Protestants were always fighting each others, torturing innocent pagans while muslims continuously invaded our nations and jews could quietly emasculated captured men for their slave business for centuries. Really smart !
So, it's possible Whites paid the karmic bill during XXth wars, and thoses who are not died in these times or born after could not be concerned by middle ages massacres.
In the other hand, jews have accumulated a huge amount of bad karma during this time.
Technically, if Hitler lose the war is the allied fault and the weakness of too much people. Humanity was not ready, but this experience made her mature.
If you look further away, these wars are only battle, the war goes on and on for millenia.
In the eternity, if a few millenia are enough to establish a humanity, it's understandable that the start-up was tumultuous.
It's by making mistakes and learning to correct them that we learn to be perfect.