...but the question came up that you can not move any one unit over the distance rolled, is this correct?
This was what I was referring to when I was trying to clarify "unit."
Regarding your question, I did answer it correctly. All models in the unit are restricted to the
D6" move. The move is made in exactly the same way as a normal move as if you controlled them, and would have to follow all the normal rules for movement except for difficult terrain.