I have to come clean, this was my own idea some years ago. Sorry for the fabrication. I envisioned more of a fluid fire and maneuver during the movement phase. Can you imagine that with AFV bounding fire.
I thought there was some talk about opportunity fire during the movement phase, but did not make the cut. The idea was for the attacker to have the use of Op fire declared during Prep to use in both the movement and Adv. fire phase.
Thanks for making this point. I agree, "Rout" was a poor word choice. The book "The Last Stand of Fox Company" is just one account of US Marines making a heroic stand at the Battle of the Chosin Reservoir.