QaS DevwI' (Klingonese, "troop leader") is a rank in the Klingon Defense Force, analogous to a sergeant of other races and cultures' militaries, or a chief of naval or fleet services. A QaS DevwI' is generally responsible for fifteen squads of five soldiers each aboard Klingon warships. (GKN novel: A Good Day to Die) The translation of meaning of QaS DevwI' is according to The Klingon Dictionary and Klingon for the Galactic Traveler.