In the German Wehrmacht, Hauptfeldwebel (short: HptFw; address: Herr Hauptfeldwebel) was not a rank but a position title, assignment or appointment, equivalent to the Commonwealth company sergeant major or U.S. company-level first sergeant. There was one such non-commissioned officer (NCO) in every infantry company, artillery battery, cavalry squadron, etc. He was the senior NCO of his subunit, but his duties were largely administrative and he was not expected to accompany his unit into an assault or a firefight.