Razriad

A razriad, or razryad (Russian: разря́д) was a type of military administrative subdivision of the Tsardom of Russia from the 16th to the 17th centuries. Service class people living within razriads were obliged to enter military service and join razriad regiments. Each regiment incorporated several military units, including streltsy, reiters, dragoons, and other types of soldiers. Razriads were governed by the main organ for the administration of the Razriad Prikaz.