I have to agree with Chenier. It would be very annoying for the ruler to have to be the Marshal in order to march with an army.
If you were to completely follow the "can't serve under someone lower than you" ideal, then you wouldn't bother allowing the sponsor to assign a marshal. You'd just auto-assign the highest ranked noble in the army as the Marshal.
IMO for game play purposes, we should allow anyone to be in any army.
I agree here.
Though, in my case it's moot since I am the Marshal.
