I think it's huge topic first of all generals and leaders played big roll in WWI so adding them going to be an interesting experience over all
Now let's speak about how it's going to be applicable
You're playing id with every level up you get points to improve your character and there's two way to develop it either going to be general ( improve army extra ... )
Or leader ( improve building...)
And you have to place it somewhere to get the benefits leader on provence and general on army we could entertain the idea of them being captured or killed
I'm open to any idea or adjustments
Thx