The Halifax Police Department was officially formed on October 28, 1864, although a system of constables had been operated in an unofficial manner since the first days of settlement, on July 18, 1749. Each ship arriving in the port city of Halifax would appoint one member of the crew to act as a constable responsible for the actions of the crew and passengers on board. In January 1799, the "night patrol" was formed to address a number of break and enters that hit the area in the previous year.