1838
The regiment was encamped in January, 1838, at Calcutta; in February at Burkee; in March at Kusseah; in April at Cawnpore, where it continued until the end of the year.[44]
1839
In February, 1839, the regiment was encamped at Chibbermold; in March at Meerut, at which station it remained until December, when it returned to Cawnpore.
The decease of Lieutenant-General Lord George Thomas Beresford, G.C.H., having taken place on the 26th October, 1839, Her Majesty was pleased to confer the colonelcy of the Third, or King's Own Light Dragoons, on Lieutenant General Lord Charles Somerset Manners, K.C.B., on the 8th November, 1839: Lord Charles Manners had commanded the regiment as Lieutenant-Colonel from 1812 to 1825, when he was promoted to the rank of Major-General.
On the 13th December, 1839, Lieut.-Colonel Michael White was promoted by purchase in succession to Lieut.-Colonel G. G. Tuite.
1840
1842
The regiment remained at Cawnpore until October, 1840, when it proceeded to Kurnaul. It marched from thence on 28th January, 1842, en route for Ferozepore, having been selected to form part of the force which had been ordered to proceed under Major-General Pollock to relieve the troops under Colonel Sir Robert Sale, who had gallantly defended Jellalabad; and also for the purpose of inflicting retribution upon the Affghans, whose treachery had caused the loss of so many brave officers and soldiers.