production management was a major flaw, hitler was not a man who though of creative new weapons or production efficiency, I would have mirrored the style of factory line the Americans used, I wouldn't have pushed for so much experimentation with individual tanks, I would have invested in adopting weapons technology that men on the ground say works best, the grease gun, 1911 and the SVT being too notable examples.
I would have developed a more accurate LMG in 8 kurtz with a lower weight and fire rate and established the modern squad system, 3 men with sturmgewehr, one with a an svt clone and another with the new LMG firing the same ammo as my sturmgewehrs.
I would have invested in firing more compact explosive rounds for attacking targets in defilade akin to modern 40mm launchers and I would have used these launchers as a mechanism to launch larger anti tank rounds from the same launcher.
Additional propaganda to make enemy troops realize that they are defending a mutual enemy, I would probably try to get an american historian for that role and I would directly target america saying that they should do as I have done with the jews and throw out the blacks to liberia.
Tell tojo to let america keep hawaii and to be more human to the dog eaters. this is about war propaganda not wining in the pacific, I would have told nipon to consolidate not aggravate.
I would have also put a major focus on kill shots for the russian war machine and it's effectiveness, more resources into espionage and infiltration to find and destroy their tank production.
Instead of having japan wage a war for attrition in the pacific I would have had them sneak around to europe and help me as my navy and use them to force Churchill to capitulate, then I would have saved my forces in western europe to fight Stalin.
IF everything went off without a hitch america joins the war a little late maybe a month or two, they will be largely demoralized because they would sympathize with the cause in many regions of america, the delay of america's entry into the war would mean my japanese allies get to europe before america can take the outlying islands in the pacific, at this point the war in europe will be over in a short time and we will have forced britain's surrender under terms that they formally apologize to all of europe fro instigating the conflict between germany and poland and poisoning the well back at the end of ww1. I'll give france back but they will have an occupation force and no military for at least 50 years, 1 0r two jap ships would stay to help out and the rest go back to defend japan, at this point we begin producing and destributing propaganda in english about communism and the red menace and how it works america won't have a clear goal, likely they won't have a foot hold into europe and only a token support in a European resistance force while this happens I will blaze across russia with my balkan forces and a portion of my forces from north Africa and western Europe, I'll let the goon in italy take responsibility for his own mistakes.
I"ll talk to the nations russia has invaded and ask for their assistance in fighting back ask that america either help or stop fighting me and my alies and suggest they elect a president who will remove the negores to africa for national peace and would speak english in an overture to the american people, 2 messages one for the south and one for the north.
It would take 2-3 years to completely capture russiaand I would tell the japanese that to keep our empire force would not do.
I would share propaganda methods and we would make clear in russia that we aren't making them a part of a new empire but that we offer them freedom of choice give them a referendum in provinces we capture. they can be wholly absorbed into the reich, left to fend for themselves while having a brief 12 year occupation or to become a province of the reich while being treated as a colony, you get our military forces to protect you, you become citizens of the reich's federation in a reich staten, basically america, EU roman province type deal, of course warn them about fleeing chinese breeding them out and that the regions they live in are not defensible against a modern military and others may not be so nice.