Answer: cso

AnswerCrossword Clue
CSOOfficer heading a staff: Abbr.
CSOHigh-ranking Army man: Abbr.
CSOInitials of a staff member.
CSOHigh-ranking army man: Abbr.
CSOMilitary man: Abbr.
CSOStaff officer: Abbr.
CSOArmy officer: Abbr.
CSOArmy man: Abbr.
CSOArmy V.I.P.
CSOSir Georg Solti's gp.
CSOU.S.N. rank