Moving divisions.

When leveling up on NPC's i will quite often move my cavlery into or out of my main army depending on terrain type, or if i want to make 2 smaller attacks.
I'm sure many players would do the same, however it is very time consuming typing in the numbers you want to move for both cavlery types, retiring the commander, appointing him to a different army, typing in the number of cavlery into the new army (both types)

So I was wondering if it would be possible to first assign commanders and units into a division then being able to move the division as a whole into an army. This would mean that re-assigning a division would take about 4 clicks (rather than 10, plus typing)