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Razriady (Russian: Разряды; also razriadnye knigi, "razriad books") were a kind of register books in traditional Russian office work in the 15th to 17th centuries. These were annual records that included the appointment of the noblemen to various posts, as well as descriptions of major military campaigns, information on the weddings of rulers and their relatives, on receptions of ambassadors, on awards for service, etc. The originals of razriad books were burned in 1682 in order to fight against mestnichestvo; however, some copies and compilations (of varying quality) were preserved. The razriady are one of the most important sources in the history of the early-modern Russian state.