Pittsburgh Police hats with checkered bands, which are dark navy blue and gold in color, popularly known as the "Sillitoe Tartan" and named after its originator, Percy J. Sillitoe, Chief Constable of Glasgow, Scotland, in the 1930s. While the checkered band is a common police symbol in the United Kingdom, Australia and some European countries, the Chicago Police Department, Cook County Sheriff's Police, the Allegheny County Sheriff's Office, and the Pittsburgh Bureau of Police are the only police forces in the United States that have adopted it as part of their uniforms. As recently as July 1930, police were required to wear
City of Glasgow Police Many serving police officers joined the Armed Forces. In 1942 Chief Constable Sillitoe was knighted and resigned in 1943 to take command of the Kent Constabulary. In 1975, the City of Glasgow Police, Lanarkshire Constabulary, Renfrew and Bute Constabulary, Dunbartonshire Constabulary, Argyll County Police, Ayrshire Constabulary and a small portion of Stirling and Clackmannan Police, were amalgamated to create Strathclyde Police. In 2013 Police Scotland (Scottish Gaelic: Poileas Alba; Scots: Polis Scotland) – legally named the Police Service of Scotland[3] – the national police force of Scotland - was formed with the merger of the eight regional police forces in