Thanks for the feedback. As for extra units, I want to keep it as close to the original game as possible. The extra units I added were either AA guns at new factories or at straights and canals, or they were units that a particular nation didn’t start with so I added them so the nation would have a variety of units (within reason, no Soviet aircraft carrier). China needed to be a lot stronger so I added an infantry to every territory as well.
It looks like I didn’t have my history straight with Africa. I’ll remove the German control marker in French Equatorial Africa for 1941, and add a German control marker to French West Africa and Madagascar in 1942. Even though there are no units there, the allies still have to divert units to capture the territories.