Argbed

Argbed (Middle Persian: hlgwpt; in Parthian: hrkpty Hargbed;[1] etymology uncertain[2]; in Roman sources: archapetēs) were a class of military commanders in charge of castles and fortresses of the Parthian and Sasanian Empires of Persia (Iran) between the 2nd and 7th centuries CE.[2] The office became more important under the Sasanian Empire.[2]

Military of the Sasanian Empire
Armed forces and units
Cataphract Clibanarii Aswaran Grivpanvar War elephants Paygan Immortals Pushtigban Sarmatians Daylamites Sogdian warriors Gond-i Shahanshah Darigan Stor Bezashk Navy
Ranks
Spahbed Aspbed Paygosban Marzban, Kanarang Masmughan Pushtigban Salar Eran anbaraghbad Argbed Hazarbed Paygan-salar Savaran Sardar Gond Salar Darigbed Navbed
Defense lines
Wall of the Arabs Gawri Wall Great Wall of Gorgan Wall of Tammisha Derbent Wall Darial
Conflicts
Romans Arabian tribes Hephthalites Turks Ethiopians Muslim Arabs Revolts and civil wars

Argbeds were granted their command by the Sassanian emperor (Shahanshah) and were responsible for maintaining the security of their area of operation (usually a trading post, military fortress, or city), fighting the encroaching nomadic tribes such as Bedouin Arabs, White Huns and Oghuz Turks, and resisting the advances of settled enemies such as Romans and Kushans.

The Sasanian king usually selected Argbeds from wuzurgan, Iranian noble families who held the most powerful positions in the imperial administration. This rank, like most imperial administration, was mostly patrimonial, and was passed down through a single family for generations. In many ways, the Argbeds had the same function and status as medieval castellans.