Well yes, this new expansion covers (almost) all battles in the 1943-45 period. And it's awesome
re: disband, I was toying around with different variants of the rule and this looks to me most practical. We need to allow
some disbands because of frustrating (and gamey) situations where e.g. a weak friendly unit is blocking a number of full strength corps or something.
At the same time, you're right that disbanding something like a full strength division or corps is highly unrealistic. It's therefore higly penalized - 200 prestige is a lot. Should it be outright prohibited? I don't think so at the moment. I'm open to discussing this on the beta group though, preferably over a (non-contrived) usg where you can show me a concrete problem in a real life game.