I know Cav can move 2 squares to follow-up and gain 1 additional attack
I know the cav must use the first follow-up to move into the square the opponent retreated from.
Can the Cav move back to their original space to attack? It I can see both sides of it, but it seems silly to advance 1 and move back 1 and still get to attack from the same space, but I think that is how it works.