Marines rally as they fall back.
The Veteran Assault Squad Sergeant is an ordinary Sergeant and must pay points to be a proper Veteran Sergeant. Dreadnoughts do benefit from the Black Rage. When using over-charged engines a dangerous terrain test must be passed first. A Librarian who joins the Death Company does not automatically pass Psychic tests. You only ever get one Rhino though and you may not take the models that don't fit.