Hello!

I thought of this question recently while watching "The Great War" series on youtube, in which it is noted that German General August Von Mackensen died in late 1945, after the end of WW2. One of the common themes noted regarding WW1 is the clash between old style tactics and thinking, and new age technology; WW2, on the other hand, was very much a war of more modernized thinking. So, what did WW1 military leaders like Mackensen think about the second world war, the way it was fought, conducted, and ended? Did they hold disdain for the new ways of fighting wars, or did they embrace it? It's something I find to quite interesting, so all responses are appreciated!