ORIGINAL: marcus725
SIPRES thank you for the help, I did create a custom campaign and all is well!
Go into the editor and go to Germany for example and check all of the units possible to be available for purchase. Save it and then load the custom campaign, start the game as axis and go to purchase screen you will see that the units at the bottom of the list will go out of the box and you can't select them for purchase.
Ok understood.
It seems to be a game engine limitation, there's not that much I can do about it.
I will post a screenshot to the tech support section.