What is "unterfeldwebel"

Unterfeldwebel (lit. "Under Field Sergeant") Was a rank of the East German National People's Army from 1956 to 1990. It was also used in the armed forces of Nazi Germany, the Wehrmacht, from 1935 until 1945, when Nazi Germany was defeated in The Second World War. The equivalent to Unterfeldwebel in the Bundeswehr of West Germany and later the Federal Republic of Germany is the rank Stabsunteroffizier (OR-5).