Heading back up to your logic up aboveāits not āunits that can (in some situations) retreatā. It is units in this situation that can retreat (attacking tts yes defending ones no). That rule is written as it is to cover the situations where submerged subs, unhittable units (subs vs planes) or amphibious assaults where some units can retreat and others cant.
As a lawyerāI get what youāre trying to do and say that the rule doesnāt say what its supposed to say. As Krieg points out, thatās up for debate. Many lawsuits are about this kind of thing.
But thatās not because its dogma Canon law its because the other outcome is insensible, contradictory, gamey, requires a tortured reading of the language devised over multiple editions and revisons of the game to try and cover so many different situations.
there is no such thing as a perfect document try to write one
