CHAPTER III. THE GRADATIONS OF OFFICIAL RANK IN THE LATER EMPIRE. Official Hierarchy introduced by Diocletian. It is well known that Diocletian introduced and Constantine perfected an elaborate system of administration under which the titles, functions, order of precedence, and number of attendants of the various officers of the Civil Service as well as of the Imperial army were minutely and punctiliously regulated. This system, which, as... more...