Under-sergeant

Because of his cadet experience he was immediately made an under-sergeant, and was responsible for the discipline of the thirty or so students on the course, and was answerable to the Commanding Officer.

Source: wiktionary

The three most important minor characters are Ensign von Krixlow, who serves in the same battalion, and the poet Weiler and under-sergeant Frôbel, who serve in the same platoon as Gadsky.

Source: wiktionary

One Saudi soldier, an under-sergeant, was killed in Bahrain on Tuesday, a Saudi official said.

Source: wiktionary