They dwell primarily in Shadowmoon Valley and the Black Temple though a few Illidari Taskmasters can be found in Hellfire Peninsula. The Illidari Taskmasters who dwell in the Ruins of Sha'naar in Hellfire Peninsula lord over the Dreghood Broken as they search for one of the seven Ata'mal crystals. In Shadowmoon Valley, Illidari appear to serve as front-line foot soldiers against the Sha'tar as they bring the war against Illidan to the steps of the Black Temple. Illidari wear Illidari tabards and fight under the Illidari banner.