During the years 1843 and 1844 the regiment remained at Aden. In July and August, 1844, the detached wing at Ahmednuggur was affected with cholera. In the course of fifteen days one hundred and eight cases occurred; the deaths during the period amounted to thirty-two. Amongst them was Brevet Lieut.-Colonel Deshon, an officer of the highest talents and character.
During the latter part of the year 1844, and beginning of 1845, a company of the regiment was employed on field service in the southern Mahratta country, where, at the assault of the fort of Munscentosh, four privates were killed; Lieutenant Gardiner, who commanded the company, and one serjeant and five rank and file, were wounded.
1845
The head-quarters of the regiment embarked at Aden on the 13th of March, 1845, and arrived at Bombay on the 7th of April. The left wing marched from Ahmednuggur on the 11th of December, and joined the head-quarters at Bombay on the 26th of the same month.
1846
In the beginning of January, 1846, the regiment, having been selected for field service, embarked at Bombay for Scinde, and on the 11th of January marched from Kurrachee, en route to Bhawulpore; it arrived at Sukkur on the 3rd of February, and on the 16th of that month proceeded on its march towards the Punjaub; but accounts being received of the termination of the war in that country, the troops advanced no further than Bhawulpore, on the Sutlej, where the regiment remained until the 12th of March, when it returned to Sukkur, from whence it embarked for Kurrachee on the 9th of August, 1846.
1847
The regiment embarked at Bombay on the 13th of March, 1847, under the command of Lieutenant-Colonel Pennycuick, K.H., in the freight-ships Ann and John Brewer, and arrived at Gravesend on the 6th of August, from whence it marched to Canterbury. In November the regiment was removed to Dover.
1848