Unless a previously undiscovered source becomes available I doubt we'll ever know for sure. I've only seen one description of the Crescent flag before, but Ken said a while back that article was mistaken and actually was a description of different regiment's flag. I saw on the internet one time this statement, "Howard Madaus... says that the 18th and the Crescent Regiment were both issued Bragg corps pattern flags before Shiloh." However there wasn't anything stating where that information came from. Again, I would appreciate any information anyone has on this regiment's flag(s).