Allocating wound rolls question. I recently played with a friend and He had a squad of Veterans where the sergeant had a 3++. Now when I shot at the unit he rolled 3++ for any wounds I made on the unit. However, and wounds that were not saved he then allocated it to another model of the unit other than the sergeant. Making the unit very difficult to take down.

My question is can he move the damage to the other models in the unit even though he had failed the 3++ saves with the sergeant?  