Glengarry Boys' Brigade; namely Warrant Officers, Lieutenants and Brevet Captains. In 1932 Percy Sillitoe, the Chief Constable of the City of Glasgow Police, abolished the traditional custodian helmet and added a new feature to the peaked caps worn by his police officers. This new feature was a black and white chequered cap band based on the dicings seen on the glengarry headress of the Scottish regiments. The diced band, popularly known as the Sillitoe Tartan, later spread to police forces in Australia, New Zealand, and the rest of the United Kingdom, as well as to some other parts of the world,
Association of Chief Police Officers in Scotland the Chief Constables' (Scotland) Club (a predecessor of ACPOS). At the time, many police forces around Scotland were amalgamating, and more were expected to in the future. A standard design of cap badge could be adopted by forces around Scotland, so new badges would not need to be purchased when two forces merged. Each force then generally had its own distinctive cap badge, usually featuring the coat of arms of the City, Burgh or County which it covered. The design comprises a Scottish thistle in a wreath of thistle leaves, all on a scroll tablet with the Latin motto: "Semper