Cap badge, other ranks, 4th/7th Royal Dragoon Guards, 1964 (c)

Die-struck anodised aluminium eight-pointed rayed star, upon which is mounted a frosted circlet bearing the regimental motto, 'Quis Separabit' (Who shall separate us), and the Roman numerals, 'MCMXXII' (1922), the date of the unit's establishment. Within the circlet is a pierced frosted cross upon which the coronet of the Princess Royal is superimposed. Slider on the reverse.

In 1922, reductions in the strength of the Army brought about several amalgamations of cavalry regiments. The 4th Royal Irish Dragoon Guards was combined with the 7th (The Princess Royal's) Dragoon Guards to form the 4th/7th Dragoon Guards. The new unit returned from India to Britain in 1929 and gained the 'Royal' prefix in 1936. In 1938, it was mechanised and initially equipped with Mk 2 tanks. The following year, it became part of the Royal Armoured Corps.

In 1992, 70 years after its formation, the regiment was merged with the 5th Royal Inniskilling Dragoon Guards to form The Royal Dragoon Guards.