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 Turnbull Street opened as Headquarters of the Glasgow Police on 23 March 1906. On 5 November 1912, by Act of Parliament, the boundaries of the City were again extended and the force merged with the Govan and Partick Burgh Police. In the First World War 300 Glasgow police officers enlisted in the Armed Forces. As a result, the force employed 400 temporary Constables and increased the Special Constabulary to 3000 to guard strategic buildings and factories within the City. In 1915, the Chief Constable ordered policemen to desist from enlisting in the Armed Forces due to the depletion of the