The Carabiniers (6th Dragoon Guards) was a cavalry regiment of the British Army. It was formed in 1685 as the Lord Lumley's Regiment of Horse. It was renamed as His Majesty's 1st Regiment of Carabiniers in 1740, the 3rd Regiment of Horse (Carabiniers) in 1756 and the 6th Regiment of Dragoon Guards in 1788. After two centuries of service, including the First World War, the regiment was amalgamated with the 3rd Dragoon Guards (Prince of Wales's) to form the 3rd/6th Dragoon Guards in 1922.

There are 13 cavalry Regiments of the British Army each with its own unique cap badge, regimental traditions, and history. Of the currently nine regular cavalry regiments, two serve as armoured regiments, three as armoured cavalry regiments, three as light cavalry, and one as a mounted ceremonial regiment. There are also four yeomanry regiments of the Army Reserve, of these, three serve as light cavalry and one as an armoured regiment. Each yeomanry light cavalry unit has been paired with a regular unit of the same role, the armoured yeomanry unit is paired with the two regular armoured units. All except the Household Cavalry are part of the British Army's Royal Armoured Corps.