Shoulder Title - Middlesex Regiment The Middlesex Regiment (Duke of Cambridge’s Own) was a regiment of the British Army. It was formed in 1881 as part of the Childers Reforms when the 57th (West Middlesex) and 77th (East Middlesex) Regiments of Foot were amalgamated with the county’s militia and rifle volunteer units. On 31 December 1966 The Middlesex Regiment was amalgamated with three other regiments to form The Queen’s Regiment. The latter regiment was itself subject to a merger in 1992 to form part of the Princess of Wales’s Royal Regiment.