 The King 's Regiment ( Liverpool ) was one of the oldest line infantry regiments of the British Army , having been formed in 1685 and numbered as the 8th ( The King 's ) Regiment of Foot in 1751 . Unlike most British Army infantry regiments , which were associated with a county , the King 's represented the city of Liverpool , one of only four regiments affiliated to a city in the British Army . After 273 years of continuous existence , the regiment was amalgamated with the Manchester Regiment in 1958 to form the King 's Regiment ( Liverpool and Manchester ) , which was later amalgamated with the King 's Own Royal Border Regiment and the Queen 's Lancashire Regiment to form the present Duke of Lancaster 's Regiment ( King 's , Lancashire and Border ) . 
