Maybe check how many men and equipment each of the 10 allied armies and each of the 46 soviet armies represent ?
Manpower vice it's probably in region of one Allied corps equals half to one Soviet army (e.g. Soviet rifle division was typically 5000-7000 effectives while Allied one was at least twice or even three times that, while Soviet tank corps was a plainly divisional level unit), but Soviets do have more basic infantry in that mix.
Last edited: