1762
Having taken the field to serve the campaign of 1762, the regiment was formed in brigade with the fifteenth dragoons, under Colonel Harvey. After encamping at Brackel in the bishopric of Paderborn, and subsequently on the heights of Tissel, the brigade advanced, on the morning of the 24th of June, with the view of surprising the French camp at Groebenstien. This movement was conducted with such address, that the French were instantly thrown into confusion, and, abandoning their camp equipage, they fell back upon Cassel, one division being surrounded and made prisoners in the woods of Wilhelmsthal. The Inniskilling dragoons pursued the French towards Cassel, and afterwards encamped near Holtzhausen.
In the subsequent operations of the campaign, the Inniskilling dragoons were actively employed, and a series of successes was followed by the capture of Cassel. A suspension of hostilities took place in November, and the regiment went into cantonments in the bishopric of Munster.
1763
A treaty of peace was concluded at Fontainbleau. The regiment received the thanks of Parliament for its conduct during the war: and in January, 1763, commenced its march through Holland to Williamstadt, where it embarked for England. It landed in February, and was stationed in South Britain; the light troop was disbanded; the establishment was reduced to six troops of twenty-eight private men each, and eight men per troop were equipped as light dragoons.
Lieutenant-Colonel Harvey, who had repeatedly distinguished himself during the war, was rewarded with the colonelcy of the twelfth dragoons, and was succeeded by Major Robert Rickart Hepburn, a most meritorious officer, who had served with the regiment many years.
1764
After the return of the regiment from Germany, its head-quarters were established at Northampton; from whence they were removed, in 1764, to York; at the same time orders were received for the officers and men to wear epaulettes on the left shoulder instead of aiguillettes; the jacked leather boots were directed to be replaced by others of a lighter description; and the regiment was directed to be mounted on long-tailed horses.
1765
1766
In 1765 the Inniskilling dragoons occupied cantonments in Scotland; they returned to England in the following year, and the head-quarters were stationed at Coventry, where an order was received for the drummers on the establishment to be replaced by trumpeters.