I was reading through the manual earlier and reading up on the combat phase and I had a question about the Defensive rating of units.  Reading through the combat phase instructions, if someone rolls a successful hit, you assign it to one of your defensive units and it goes to the casualty board and after they fire back the casualty board is cleared (or maybe it’s after the battle is over).  Anyway, the point is, the way I read it, once a unit it hit and fires back, they are destroyed.  If that’s so, what is the point of a defensive rating (such as the infantry’s rating of 2).

Just trying to clear this up before we get a game of Europe 1940 going.