Crossword clues for NCO.:NCOStaff sgt., e.g.NCOCertain driller, for shortNCOOne with an E-5 ranking: Abbr.NCOSgt., perhapsNCOFull Metal Jacket figureNCOCpl. or Sgt.NCODrill instructorNCOMil. designationNCOPvt.'s superiorNCOSgt.NCOMany a PX shopperNCOSgt. or cpl., for example (my dad was in the military so, yes, this is fair game!)NCOCorp., for oneNCOElvis was one from '59 to '60NCOMember of "the backbone of the Army," for shortNCOBarracks boss, brieflyNCOOne may be petty: Abbr.NCOCpl., e.g.NCOOne with a chevron: Abbr.NCOSarge, e.g.NCOSgt. or cpl.NCOSgt, for oneNCOMidlevel mil. leaderNCOLieut.'s subordinateNCOArmy fig.NCOBX shopperNCOCorp., e.g.NCODI, e.g.NCOE-4 or E-5NCOE-4 to E-9 rankingNCOLt.'s underlingNCOMil. figure with chevronsNCOOne above a specialist: Abbr.NCOOne in a mil.NCOOverseer of batteries, brieflyNCOPX userNCOPetty person, e.g.?: Abbr.NCOPvt. or sgt.NCOE-5, e.g.NCOSgt., e.g.NCOE-6 in the Navy: Abbr.NCONon-com with chevronsNCOCertain G.I.NCOFirst sgt., e.g.NCOMil. rankNCOChevron wearer: Abbr.NCOSSgt., e.g.NCOSgt. Snorkel, e.g.NCOUSO attendee, possiblyNCOM.Sgt., for one