Master warrant officer

Master warrant officer (MWO) is a senior military rank in the Canadian Forces, Singapore Armed Forces, the South African National Defence Force and the Israel Defense Forces.

Master warrant officer is an Army and Air Force non-commissioned member rank of the Canadian Forces. It is senior to the rank of warrant officer and its equivalents, and junior to chief warrant officer and its equivalents. Its Naval equivalent is chief petty officer 2nd class.

The French language form is adjudant-maître.

The rank insignia of the MWO is a crown within a wreath of gold laurel, worn on both forearms of the service dress tunic; in gold metal and green enamel miniature pins on the collar of the service dress shirt and outerwear coats (army only); on CADPAT slipons worn in the middle of the chest, embroidered in tan (army) or dark blue (air force) thread; and in "old gold" thread on blue slip-ons on both shoulders of other uniforms (air force only).

MWOs are generally initially addressed as "Master Warrant Officer Bloggins", or "Sergeant-Major Bloggins" (if they hold that appointment), and thereafter as "Sir" or "Ma'am".

MWOs may hold a number of appointments, including the position of sergeant-major, the most senior NCM in a company-sized Army unit or sub-unit. Some of these appointments are listed below:

Due to the unified nature of the CF, it is not unheard-of for Air Force MWOs — especially those of the so-called "purple trades", such as logistics or military police — to find themselves filling the appointment of squadron or company sergeant-major in what are otherwise considered "hard" army units (such as service battalions or communication squadrons).

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