Cap badge, other ranks, The Middlesex Regiment (Duke of Cambridge's Own)

Gilt metal and white metal badge with the Prince of Wales's feathers within a coronet, with a scroll inscribed with the motto 'Ich Dien' (I Serve), surmounting the coronet and cipher of the Duke of Cambridge, all within a laurel wreath with a scroll inscribed with the battle honour, 'Albuhera'; below this, another scroll inscribed with the unit title, 'Middlesex Regt'.

The honour, 'Albuhera', was awarded for the regiment's actions in the Battle of Albuera in 1811, during the Peninsular War (1808-1814).

The 1881 Army Reforms merged several units to create county regiments. One of these was the Middlesex Regiment, formed by merging the 57th and 77th Regiments of Foot, which both had an existing affiliation to Middlesex.