From 1910 to about 1920, Naval Police in the RCN wore a badge with the letters "N P" with a crown between the letters. A Chief Petty Officer (Master At Arms) wore the badge in gold wire on the collar of his jacket. Other Ratings had the Naval Police badge worn on cloth and best serge dresses embroidered in gold, those on other serge dresses were embroidered in red worsted, and those on the white uniform in blue cotton. All were worn on the right sleeve.
During the Second World War, Ratings assigned to policing duties or members of the Regulating Branch wore the same rank insignia as other ratings but had rank titles specific to their trade. Branch badges (where applicable) were worn on the right sleeve.
The Crown and Wreath insignia of Master At Arms was worn on the blue jacket collar or on the cuff of the white uniform. The Regulating Petty Officer badge consisted of the Crown alone, and was worn centered on the right sleeve. Insignia was embroidered in yellow thread or gold wire, or blue and red thread . Members of the Women's Royal Canadian Navy Service (WRCNS) wore medium blue embroidered insignia.
The rank of Regulating Petty Officer did not survive long past the end of the Second World War. The appointment of Master At Arms survived a little longer, but by 1954, these badges were no longer listed in the Navy Catalog of insignia.
Master At Arms
For economy reasons a yellow thread embroidered collar badge was adopted about 1943.
WRCNS Master At Arms embroidered collar badge.
Badges of trade or branch were worn by Seamen and Petty Officers on the right sleeve of the jacket, and on the jacket lapels by Chief Petty Officers. Badges were in gold wire for best jackets and dress uniforms, red embroidery for blue jackets and blue or black embroidery for white jackets or jumpers. The Canadian Regulating Branch badge was introduced about 1950 and consisted of a crossed quill and sword surrounded by a laurel wreath, the whole surmounted by a maple leaf. This badge was worn by Regular and Reserve Regulators until the late 1950s, it appears that Reserves wore the badge until Unification. A similar badge was worn by Royal Canadian Sea Cadets.
 Regulator Badge worn on blue jacket |
 Badge worn on white jacket |
 Navy Cadet Regulators pre 1975 |
 Navy Cadet Regulators post 1975 |
Introduced about 1950, the insignia of the Quartermaster Trade was a ship's wheel over a boatswain's pipe. By the early 1960s the trade badge had been renamed to Boatswain Trade. Members of the trade assigned to Patrol duties wore the Patrol brassard when on duty.
 Cloth sleeve badge for Blue Uniform |
 Gold wire collar badge |
 Cloth sleeve badge |