At this period the old Cavalry Regiments rode black horses (excepting the Scots Greys) with docked tails; but the Duke of Kingston's Regiment was mounted on light horses of various colours, with swish or nag tails. The accoutrements were as light as possible: the men carried short carbines slung to their sides by a moveable swivel, pistols, and light swords inclined to a curve.
The usefulness of the Duke of Kingston's Regiment of Light Horse was proved in Scotland, where it served under His Royal Highness the Duke of Cumberland, and was found qualified for every description of service; the light horses traversing hilly grounds with facility. It distinguished itself on several occasions, particularly at the battle of Culloden, on the 16th of April, 1746, when it charged the clans with signal gallantry, and evinced great spirit and activity in the pursuit of the rebel army upwards of three miles from the field of battle. The Duke of Cumberland was highly pleased with its behaviour during the period it was under his command; and the conduct of the Light Horse throughout the contest reflected credit on the noble peer who had raised them.
The rebellion being suppressed, the regiment was, in consequence of the conditions on which the men had enlisted, directed to be disbanded; but the Duke of Cumberland so highly approved of its conduct that he obtained permission to embody as many of the men as would re-enlist, as his own Regiment of Light Dragoons.
His Majesty's thanks and particular satisfaction were communicated to His Grace the Duke of Kingston, for his zeal and affection for His Majesty's person and Government; and His Grace was desired to convey to the officers and soldiers His Majesty's high sense of their loyalty, activity, and gallant behaviour, at a period of national danger. The regiment was afterwards disbanded at Nottingham, and nearly every man engaged in the Regiment of Light Dragoons, of which, as a signal mark of honour and distinction, His Royal Highness the Duke of Cumberland was appointed Colonel.
The Duke of Cumberland's Light Dragoons were mounted on active nag-tailed horses, from fourteen and a-half to fifteen hands high. The men were from five feet eight to five feet nine inches in height; and their equipment was upon a new and light plan, but retaining the cocked hat of the Heavy Dragoon pattern. This regiment served in the Netherlands, with the Army commanded by His Royal Highness the Duke of Cumberland: its general usefulness was fully established, and it distinguished itself at the battle of Val, in 1747. The treaty of Aix-la-Chapelle having put an end to the war, it returned to England, and was disbanded in 1749.
From this period the value of light horsemen was more appreciated in England than formerly; the general utility of this arm, on home and foreign service, had been fully proved; and at the commencement of hostilities with France, in 1755, King George II. resolved to possess the advantage of a body of Light Cavalry in the approaching contest. His Majesty accordingly commanded a troop of Light Dragoons to be added to the First, Second, and Third Regiments of Dragoon Guards, and First, Second, Third, Fourth, Sixth, Seventh, Tenth, and Eleventh Regiments of Dragoons. The First, Second, Third, and Fourth Irish Horse (now Fourth, Fifth, Sixth, and Seventh Dragoon Guards), and the Fifth, Eighth, Ninth, Twelfth, Thirteenth, and Fourteenth Dragoons, being on the Irish establishment, did not receive the same addition.
These troops of Light Dragoons were mounted, armed, equipped, and trained, according to specific instructions, calculated to render them available for the services for which they were designed. Several of them were reviewed in Hyde Park by His Majesty; and their neat appearance, celerity of movement, and the spirited and exact manner in which they performed their evolutions, were much admired.
Nine of these troops were formed into a brigade in 1758, under the command of one of the King's aides-de-camp, Colonel George Augustus Eliott, of the Horse Grenadier Guards; and they were employed in the expeditions to the coast of France under Charles Duke of Marlborough and Lieut.-General Bligh. They landed in France twice; skirmished with the French Cavalry; and throughout these enterprises they evinced activity, spirit, and general usefulness. After their return to England, they were augmented to 125 men per troop.