Mixed Canonicity: This article or section refers to elements from both Original Dune and Expanded Dune.

Supreme Bashar was a military rank bestowed upon those who were commanders of entire military forces. It was used in the Old Empire and restored by the League of Nobles and the Army of Humanity and passed in the time of the Faufreluches of the Imperium. It was also used later by the Bene Gesserit, and was carried over to the combined New Sisterhood.

Known Supreme Bashars included Vorian Atreides during the Butlerian Jihad, Miles Teg during the Return of the Honored Matres, and Janess Idaho during the advent of Kralizec.

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