Supply unit assignment (Fearless Blue)

I think we should be able to assign priorities or specific assignments to our supply units. For instance if I have a division in an enemy country I may wish to send a heavily defended supply unit to resupply it.
Also I would rather my air defence units get resupplied in favour of a fort garrison. So a priority of resupply would be good.

Yes, but as an over ride to the current system for special cases.