20 Apr 1810 Appointed Hospital Mate.
29 Oct 1812 Appointed Assistant Surgeon 10th (North Lincolnshire) Regiment of Foot on the resignation of Assistant Surgeon David W B Pearse 10th Foot.
7 Aug 1813 Wounded in the Peninsular War. While attending the wounded at Tarragona, had his left foot and part of his leg blown away by a cannon ball. He was granted a war pension of £50 commencing on 8 August 1814.
5 May 1814 Staff Assistant Surgeon.
29 Mar 1821 Birth of a son William T Rolston who died from cholera on 31 March 1857 in Bangalore.
Malta 13 June 1826 Birth of a son Thomas Ross Rolston to Assistant Surgeon to the Forces Thomas Rolston and his wife Susan. Thomas Ross died at Gibraltar on 11 January 1827, aged 7 months.
31 Aug 1826 Death of Assistant Surgeon to the Forces Thomas Rolston at Valletta Malta.