Well, another peculiarity of Confederate insignia of rank is that there was only one insignia for generals, regardless of grade. There was no distinction between Brigadier-General, Major-General, Lieutenant-General, General, and General of the Armies -- all wore three stars enclosed within a wreath. The U.S. Army, of course, distinguished between grades of general by the number of stars.
Stars, unenclosed by a wreath, on a Confederate collar indicated a major (one star), lieutenant-colonel (two stars), and colonel (three stars).