I've a corp which I moved onto a stack with a higher ranking 2 star general.
As I did so the leadership changed...
a little weird in real terms but I sort of understand it. The highest ranking general taking leadership of any stack.
The weird thing is that General, altough 2 star was also a divisional commander and had a full division in tow.
Not only that but when I removed the original leading general (and his divisions) I am left with a stack which is a division and a corp at the same time. I can then reform the corp for the original general.
I assume this is not quite as intended.