In 1753 the King's Own lay at Colchester, and in 1754 at Croydon. In December of this year it was broken up into half troops, and employed on coast duty: being scattered along the sea coast, from Shoreham to the Isle of Wight.
1755
In April, 1755, Lord Tyrawley was removed to the second foot guards, and King George II. conferred the colonelcy of His Own Dragoons on George, Earl of Albemarle, from the twentieth foot.
1756
In June, of the same year, the whole regiment assembled at Lewes, where it remained till July, 1756. At this time the King's Own, in common with the other regiments of dragoons, received the addition, novel to the British service, of a light troop. In July it marched to Reading, and in December of the same year, to Northampton.
1757
1758
The regiment marched to Henley, Amersham, and High Wycombe in June, 1757; and war having been declared against France in May, 1758, the light troop, then commanded by Captain St. Leger, was ordered into camp on South Sea Common, for the purpose of forming, with the light troops of eight other regiments, part of the force intended for a descent on the coast of France, the whole forming a brigade, under Colonel Eliott, afterwards Lord Heathfield. The troops embarked May 19th, sailed June the 1st, and arrived on the French coast so as to land in Cancalle Bay on the 5th. On the 7th the army moved on St. Maloes, the light troops forming the advance guard, and encamping about a mile from the town.
As soon as night fell, the piquets and light dragoons were detached against the harbour and the suburbs of St. Servan, being ordered, if possible, to destroy the stores. This object they effected with equal judgment and determination, setting fire to the storehouses and vessels in the harbour, together with the magazines of tar, pitch, rope, &c., so completely performing their work, as totally to ruin the whole of the marine stores, and to destroy one man-of-war of 50 guns, one of 36, and all the privateers, some of 30 guns each; the vessels destroyed amounting to upwards of 100 sail, and the fire continuing to rage all night. The light dragoons afterwards advanced to the town of Dol, where, in several slight affairs, they showed great zeal and activity. On the 11th, they re-embarked, and the fleet sailed on the 16th, remaining, however, some time longer on the coast of France, and watching another opportunity to land. This being rendered impracticable by the weather, the fleet returned, and arrived at Spithead on the first of July. The light troops remained at Portsmouth for some time, and many experiments were made with boats of different constructions, in order to ascertain the practicability of landing men and horses in rough weather.