There were important, even decisive "soft factors", as well. E.g., literacy among common solders and even officers was much higher in German forces, which has i

There were important, even decisive "soft factors", as well. E.g., literacy among common solders and even officers was much higher in German forces, which has impact on communications, the ability to navigate troops, etc. (At least, this was deemed an important factor in French post-analysis. – "The Culture of Defeat", orig. "Die Kultur der Niederlage", by Wolfgang Schivelbusch has a great chapter on this.)