From 1910 to about 1920, Naval Police in the RCN wore a badge with the letters "N P" with a crown between the letters. Confirmed Petty Officers and Chief Petty Officers wore the badge in gold wire on the collars of their jackets with the insignia of their rank in the usual location on the sleeve. Junior Ratings wore the Naval Police insignia in blue (illustrated above) or red embroidery on the left 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. Depending on the class of uniform being worn, the insignia was embroidered in either yellow thread or gold wire. 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 Catalogue of insignia.
 Gold (yellow) embroidered collar badge. |
 Gold wire embroidered collar badge. |
 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 |