I see that in the examples you move units from 4 to 5 and 3 to 2, is this normal? You mention that movement is from Rear to Center and from Center to Front, or in reverse, so shouldn’t 4 first need to go to front if they want to get to 5?
EDIT: After thinking about it, it doesn’t make sense since then you cannot surround or get to the rear while front is fighting, so is it about the wording maybe?