Steve,
I have a problem with the Commonwealth Armed Forces, since you've left out First Cavalry, First Armored Divisions , and Third Infantry Division (Mech)--The Rock of the Marne is a very proud Division in US Army Lineage, as is the Golani Brigade in Israeli Lineage. I can see Giving the Commonwealth another Corps, as I would the Chinese and Terran Union.
Also, I think you left out the Indian Divisions nor given the Chinese a large enough army. I would hope to see more Russian Guard Tank Divisions given their role in World War II.
China and India with two plus billion people can raise armed forces larger than what you're showing. Not significant but just an observation
Terrible being a military historian, I know its just a game but.....
Kevin