From what I have read about how Palpatine ruled, he issued edicts which where then dealt with by the Grand Moffs, and Moffs. Said appointees dealt with the Military forces within their jurisdictions. Although it begs to be said that Palpy made all of the decisions, he had Vader and the various other Hands, Inquisitors and the like. Ask questions Defender and I will answer if I know the correct answer. - Grand Moff Conway