Got that. Now say there is an Army unit, 1 XXX and 2 XXX in Fredricksburg. I want to move another XXX (3 XXX) into Fredricksburg. How do I do that with out having 3 XXX merge with on of the other three (AoP, 1 XXX or 2 XXX)

<t> Assume a 2 unit stack with 1 XXX on top and 2 XXX on the bottom. I want to move an additional, say an artillery unit, to joint the 2 XXX. Every time I try to do this is merges with the top unit, 1 XXX. Also if I just want the artillery unit to just joint the stack, it seems to always merge with ...