Supreme Commander of the Imperial Fleet

The Supreme Commander of the Imperial Fleet was the title of the highest positioned officer in the Imperial Starfleet, most especially in the government of the Imperial Remnant. Holders of this title include Darth Vader, Grand Admiral Thrawn, Luke Skywalker, Admiral Daala, and Gilad Pellaeon. This title seems to have replaced that of Executor (only ever held by Darth Vader, Sedriss, and Xecr Nist) as the one given to the effective Commander-in-Chief of the Imperial Military.

As Supreme Commander, Admiral Gilad Pellaeon secured peace with the New Republic with the Pellaeon-Gavrisom Treaty, and was made Grand Admiral and chair of the Imperial Council of Moffs, therefore making the Supreme Commander the most important figure in the government of the Imperial Remnant, and effectively Imperial Head of State. The Supreme Commander had the power to override military decisions made by individual Moffs, most especially the use of the Starfleet and the power to federate the individual Sector fleets, although the Moffs could in turn recall the Supreme Commander if he lead forces out of the Remnant's own territory.

Vader was apparently created Supreme Commander by direct appointment from Emperor Palpatine, as was his son when Palpatine was "reborn" in a clone body; Thrawn was most likely elected by the Moff Council; Daala assumed it by killing off the thirteen most powerful warlords. It is unknown how Pellaeon acceded to the post, though it was presumably through the same way as Thrawn.