I also wanted to mention one of my few issues with the story, this being the international situation. While the US joining the Central Powers was a brilliant twist on the usual WW1 alt-history, some of the subsequent developments have struck me as a little too convergent. Specifically, I find it odd that the revolution in Russia would not be immediately squashed by the Whites, who presumably can count on some kind of German backing. Maybe Germany's enmity towards their former enemies keeps them from doing so, along with the significant task of rebuilding their country and securing their sphere, but the success of the Bolsheviks has still struck me as odd. This could be corrected in the second part (the Russian Civil War is not yet over, after all), and I think it would make for a more interesting story altogether. A socialist US would have it far too easy geopolitically if the USSR was there to back them up, and vice-versa. That said, this is only a minor issue to me.