Wachtmeister was a German military rank of non-comissioned officers. It was also adopted into Russian Army vakhmistr (ва́хмистр) and was used as Sergeant-grade rank in cavalry (until 1826), then Special Corps of Gendarmes and Cossack cavalry and Cossack Leib Guard units. Military rank, or simply rank, is a system of grading seniority and command within military organizations. ... In russian, word army means armed forces in general. ... This article is about the rank of sergeant. ... An army unit consisting of mounted soldiers is commonly known as cavalry. ... 1826 was a common year starting on Sunday (see link for calendar). ... The Special Corps of Gendarmes (Отдельный корпус жандармов) was the secret military police of the Russian Empire in the 1800s and early 1900s. ... Cossack Host (Cossack Voisko, Казачье Войско (kazachye Voysko), sometimes incorrectly translated as Cossack Army) was an administrative subdivision of cossacks in Imperial Russia. ... The Reply of the Zaporozhian Cossacks to Sultan Mehmed IV of Turkey. ... The term Leib Guard (Russian: ) collectively distinguished military units serving as personal guards of the Emperor of Russia. ...