spahbed

Spāhbed (also spelled spahbod and spahbad) is a Middle Persian title meaning "army chief" used chiefly in the Sasanian Empire. Originally there was a single spāhbed, called the , who functioned as the generalissimo of the Sasanian army. From the time of Khosrow I ( 531–579) on, the office was split in four, with a spāhbed for each of the cardinal directions. After the Muslim conquest of Persia, the spāhbed of the East managed to retain his authority over the inaccessible mountainous region of Tabaristan on the southern shore of the Caspian Sea, where the title, often in its Islamic form (; in ), survived as a regnal title until the Mongol conquests of the 13th century. An equivalent title of Persian origin, ispahsālār or sipahsālār, gained great currency across the Muslim world in the 10th–15th centuries. The title was also adopted by the Armenians and the Georgians, as well as Khotan and the Sogdians in Central Asia. It is also attested in Greek sources as. The title was revived in the 20th century by the Pahlavi dynasty, in the Modern Persian form, equivalent to a three-star Lieutenant General, ranking below (full General). Use in pre-Islamic Iran The title is attested in the Achaemenid Empire in its Old Persian form, spādapati (from *spāda- "army" and *pati- "chief"), signifying the army's commander-in-chief. The title continued in use under the Arsacid Parthian Empire, where it seems to have been a hereditary position in one of the seven great houses of the Parthian nobility.