515 Hashemites
The 515 Hashemites (Arabic: الهواشم ٥١٥; Turkish: 515 Haşimiler) were a short-lived Arab nationalist group active in Turkey. == Symbolism == The number "515" is a symbol of the Arab Revolt against the Ottoman Empire which was led by Hussein bin Ali, who was from the tribe of Banu Hashim, the same one that Muhammad belonged to.