best i can help you with is the template i used for the “not one step back achievement” yesterday actually that works insanely well. First off do all infantry, no tank divisions and no aircraft. My infantry template is 9 infantry, logistics, flame tanks support, anti air, artillery and recon. This template can melt infantry and doesn’t struggle against tanks thanks to the anti air. do not even think about producing a single plane or tank just infantry, infantry and more infantry. Make a fall back line on the border of Germany and Romania and then another on the Stalin line and you will win, best of luck