master sergeant and have either gone through, or are about to go through the Warfighter Course at the Specialist and Warrant Officer Advanced School (SWAS) in the Specialist and Warrant Officer Institute (SWI). In order to be promoted to a second warrant officer (2WO) and above, they must have been selected for and graduated from the joint warrant officer course at the SAFWOS Leadership School. Warrant officers rank between specialists and commissioned officers. They ordinarily serve as battalion or brigade regimental sergeant majors. Many of them serve as instructors and subject-matter experts in various training establishments. Warrant officers are also seen on the various staffs headed by the respective specialist officers. There are six grades of warrant officer (3WO, 2WO, 1WO, MWO, SWO and CWO). Warrant officers used to have their own mess. For smaller camps, this mess is combined with the officers' mess. Warrant officers have similar responsibilities to commissioned officers. Warrant officers are usually addressed as "encik" ("mister" in Malay language) or as "warrant (surname)" or "encik" (surname). Exceptions to this are those who hold appointments. Warrant officers holding the appointment such as commanding officer (CO) and officer commanding (OC) are to be addressed as "sir" by other ranks, and those holding sergeant major appointments such as regimental sergeant major (RSM), company sergeant major (CSM), formation sergeant major (FSM), institute sergeant major (ISM) and the Sergeant Major of the Army (SMA) are to be addressed as "sergeant major" by other ranks. Also, all warrant officers holding the rank of chief warrant officer (CWO) are to be addressed as "sir" by other ranks. Since all warrant officers are non-commissioned officers, they are not saluted. Although ceremonial swords are usually reserved for commissioned officers, warrant officers of the rank of master warrant officer (MWO) and above are presented with ceremonial swords, but continue to carry the pace stick, with the sword sheathed during drills and parades. Singapore Civil Defence Force In the Singapore Civil Defence Force, there are two warrant officer ranks. These ranks are (in order of ascending seniority): 2nd warrant officer and 1st warrant officer. South Africa In the South African National Defence Force, a warrant officer (WO) is set apart from those who hold a non-commissioned officer (NCO) rank. Warrant officers hold a warrant of appointment endorsed by the Minister of Defence. Warrant officers hold very specific powers, which are set out in the Defence Act and