It is Scotland's senior regiment and the only Scottish cavalry. Through the Royal Scots Greys, it is the oldest surviving Cavalry of the Line in the British Army. With the other British cavalry regiments it form part of the Royal Armoured Corps.
The regiment has many battle honours from Blenheim in 1704 through to the Persian Gulf War of 1991. Their most famous engagement took place at Waterloo on 18 June 1815 when the Scots Greys charged D'Erlon's column.