The Hejaz Expeditionary Force (Turkish: Hicaz Kuvve-i Seferiyesi) of the Ottoman Empire was one of the expeditionary forces of the Ottoman Army. Its commander had the authority of an army commander. It was formed during World War I for the defense of Medina (located in the region known as the Hejaz).Fahreddin Pasha was appointed to the commander of the Hejaz Expeditionary Force on 17 July 1916. The principal unit of this force, the Medina garrison itself.