[Rules] Activating units outside of an Assault to move on a IF

[Schoenwulf]

I wasn't sure about doing it all in one activation. 

That would be more of a tactical decision.

Have done this as well. The only problem with doing it all in one activation is the possible recovery of the DM unit (which can't be used in the assault) and the now-activated adjacent unit being spent for a fire order that it may not be able to use unless there are other targets external to the assault.