Army - Emblem - Warrant Officer - Chief Warrant 5 - Bar - MugChief warrant officer is a military rank used by the United States Armed Forces, the Canadian Armed Forces, the Pakistan Air Force, the Israel Defense Forces, the South African National Defence Force, the Lebanese Armed Forces and, since 2012, the Singapore Armed Forces. In the United States Armed Forces, chief warrant officers are commissioned officers, not non commissioned officers (NCOs) like in other NATO forces