I don't remember what the mod was called but I remember it was from Valour. It allowed me to take on the French, British, American and Soviet armies, depending on which map I chose to take on. I can't find that mod in the workshop and I don't know how to look for it, plus I'm using MACE.
With that mod, I had a lot of fun using many captured vehicles on different fronts. Although I inevitably lost my conquest. I ran out of resources and the Red Army is fearsome.
I played a skirmish on a Berlin map to represent my final fall, it was a rewarding experience.