I most note I disagree with two things related to the Long War:
A) The efficiency of Air Units. Cloudskiffs are looking like WW2 era craft, after less development time than they had by WWI in OTL (If I've got my years right.)
B) The efficiency of Tanks. They should be breaking down more. And if Rommel's Panzers are anything like the British WWI tanks you've given the image for, and if the French Tanks are anything like the FT-17's you've got there, then Rommel isn't flanking anything faster than a barn.