You barely see anything about the Chinese occupation, the fight in Africa, the French resistance, or anything dealing with the Italians. I know these games are largely a propaganda device, since it's really the last time America looked good, but you'd think someone would fund these games.
The older call of Duty games had a couple of good Kursk missions. The Russian side of the war was pretty well represented in the old CoD games, with a number of stand-out missions.
https://www.youtube.com/watch?v=_lF2LGq61YI