Archibald Campbell, the elder son and heir to the baronetcy, died unmarried in 1831 serving as a chaplain in India.
He served as aide-de-camp to his father throughout the first Burmese War, and on 1 July 1824 he was promoted a Lieutenant, without purchase, and in 1826 thanked by the governor-general in council for his services.
[5] On 11 July 1826 he was promoted to a company and remained in Burmah in a civil capacity until 1829, when he returned to England and joined the depôt of his regiment.
[5] From 1831 to 1837 Campbell acted as aide-de-camp to his father when serving as Lieutenant-Governor of New Brunswick, and in the latter year he purchased the majority of his regiment.
[1] On 11 Nov. 1851 he had been promoted colonel by brevet, and on 24 March 1854 he was posted to the command of the 2nd brigade of the 3rd division under Major-General Sir Richard England, with the rank of Brigadier-General.
[5] On 7 June 1855 he was superseded by Lieutenant-General Henry Bentinck, and on hearing of the intended assault upon the Great Redan at Sebastopol he volunteered to lead the detachments of the 4th division to the attack.