The Germans were making a lot of war machines in 1935-1939, then slowed down for a period, and in spring-summer 1942 speeded up again and after Stalingrad started "total war".

I guess the period in-between left Germany totally behind of the other nations , and although Germany could never match the Allied production and especially the US production figures, they certainly would have needed the planes and tanks they left unmade in 1940-1942.

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