The Japanese wouldn't have won if they invaded Russia in 1941.

Its a pleasure. You bring up logistics as a crucial problem for the Japanese invasion of the USSR. It is no secret by any means that Japanese logistical planning is a major crutch for them, however a key flaw in your argument is that you are assuming that all these other operations and invasions; most Mayala, most of the Pacific IE Wake, Guam, Manila, the Philippines, Australia, Burma, Thailand, ect. would still have taken place and thus would have used up an ample amount of the Japanese resources and manpower. I submit to you that the majority of these operations would not have taken place had the Japanese decided not to attack the US first but instead attack the USSR. While we can not know for certain what would or would not have happened, I'm sure most of the operations in China and along the Russian border would have still taken place, but it is almost guaranteed that the vast majority of the pacific campaign would not have taken place since an attack on any of these nations or islands would have resulted in a war with the US since the vast majority had a US military presence. Supplying a transoceanic campaign is of course far more costly then a ground operation and the Japanese were able to successfully dominate the Pacific Ocean for many months taking most of the territory there. All the resources used to maintain and operate there fleets would not have been needed since there would have been no Pacific campaign. This means indisputably that the Japanese would have had a much larger force of manpower and far greater stockpile of resources due to them not using them up during the Pacific campaigns and the fewer territories they would have to maintain. All of this could now be used to supply the invasion of the USSR. Now the main problem that the two of us seem to be having here is that the point that I am trying to make is not that the Japanese empire would have successfully conquered all or even most of Russia. The point I was trying to make is that by combining the power of the German forces attacking from the West and the Japanese forces from the East causing the USSR to fight a two front war would have been impossible for the Soviets to survive. They barley survived the German assault alone. Now imagine that you are Stalin and that on top of the German assault from the West which you are barley surviving now you have anywhere up to 6+ million Japanese soldiers, tanks and aircraft approaching from the East. You only have 700,000 troops on the eastern front and a very small force of amour and aircraft since you sent the majority of these assets to stop the German onslaught. So what do you do now? You'll have to send reinforcements to the Eastern font but now every asset you send to stop the Japanese was an asset that the USSR would have had, and needed, on the Western front. This severely reduces your chances of winning either front. The key here is not that either the Germans nor the Japanese needed to successfully conquer the Soviet Union on their own, or that one side needed to push so deep into Soviet territory, but that the combined attacks from both parties would result in the USSR stretching their assets far to thin which would result in the defeat on one front or the other or possibly even both. Well that's all I have time for as well. Good luck in your next round. http://www.google.com... http://www.google.com... http://www.google.com... http://www.google.com...