The rank of master warrant officer is the second-highest non-commissioned
rank in the Canadian Forces
. Master warrant officers rank immediately above warrant officers
, but below chief warrant officers
The insignia for a master warrant officer is a British Imperial Crown, surrounded by a wreath of laurels. Depending on the dress regulations, the insignia is worn on the upper arm (Army, combat uniforms only), on epaulets (overcoats, work-dress sweaters), at the base of the sleeve (dress tunics, work-dress jackets) or on collar pins (dress and work-dress uniform shirts).
In the Canadian Forces, a master warrant officer (abbreviated "MWO") is addressed as "Sir" by junior ranks, and simply as "Master Warrant" or "Master Warrant Bloggins" by senior ranks. (Addressing a MWO as "Master," although it may seem amusing at the time, is not advised.) As warrant officers do not hold a commission in the Canadian Forces, they are not to be saluted. In the Navy, the equivalent rank is Chief Petty Officer, 2nd Class (CPO2), and is addressed as "Chief" or "Sir". In French, a master warrant officer is called "un(e) adjudant(e)-maître " and a CPO2 is called "un premier maître de 2e classe". Prior to 1967, Master Warrant Officers were called Warrant Officers 2nd Class (WOII).
Almost all MWOs hold special appointments, by whose names they are commonly addressed, including Company Sergeant Major (CSM) and Troop Sergeant Major.
Warrant Officer ← Canadian Forces Ranks and Insignia → Chief Warrant Officer
D-Net - http://www.dnd.ca/site/Community/Insignia/arma_e.htm