Have you considered that your assumption that the Germans were trying to create a master Aryan race is incorrect?

/u/searocksandtrees compiled a list of links you might find helpful in this thread

I wrote a bit about this here.

The Germans and Japan had many the same goals in mind, which were mostly centered on expansion, mainly to take over other countries natural resources. The notion that the Nazi's waged war to create an "aryan" race is false. Creating a Aryan race was more of a policy in Germany during Hitler's time in power than a goal for the war. The Nazi forces massed HUGE amount of financial assets during their initial conquests, before they were outstretched for their own good and much of these assets were later taken by the allied armies, mainly with a "Finders Keepers" mentality. Don't believe everything that they tell you in the elementary and high school history classes because that notion of creating a aryan race is not correct.