Loosely based on? Right cause taking the time period, figures, equipment, tactics, politics, economics, internal country issues, resources, key events and much more during 1936 to 1945 is simply a loose interpretation of things, ya? NO. They marketed this game as a grand strategy title based on one of the most prominent conflicts within world history, and thats what most if not all people inherently were looking for when buying this game.
As compared to, "what meme can we come up with that falls in the realm of history but has no applicability here in this era in which this conflict takes place in?" Ya I must've completely overlooked that session in history class when the Byzantine Empire didn't really fall to Seljuk turks, they were there the whole time, Greece just needed to take a few bits of territory and they will uncover an empire that was founded during the age of antiquity.
Or better yet lets establish a communist dictatorship in an ancient asiatic culture that has had dedication for hundreds of years to a set of beliefs and figures who they view as literal gods among men, to what some Russian is saying about equal rights for workers.
I'll be more glad they prioritize elements within their focus tree more for actual WW2 era plausibilities as opposed to the offshoot BS, they seem to keep ramping up because people like you disregard the value of history and just enjoy doing the outrageous simply because you don't see the intriguing complexity and interest that so many people have come to appreciate this moment in history emulates. Which is still shaping our society and the globe to this very day.