@Yoper:
This is my guess:
Two player game: One player controls all Axis powers (Germany/Japan/Italy) and the other controls all the Allies (the remaining powers).
Three player game: Each player controls one of the following powers or group of powers - all the Axis powers, United Kingdom/ANZAC/ France, and the United States/Soviet Union/ /China.
Four player game: Each player controls one of the following powers or group of powers - all the Axis powers, United Kingdom /ANZAC, Soviet Union/France, and the United States/China.
Five player game: Each player controls one of the following powers or group of powers- Germany/Italy, Japan, United Kingdom/ANZAC, Soviet Union/France, and the United States/China.
Six player game: Each player controls one of the following powers or group of powers- Germany, United Kingdom /ANZAC, Italy, Soviet Union/France, Japan, and the United States/China.
Is this what you want or what you think will be in the rulebook?