25 Oct 1812 Appointed Hospital Mate.
25 Oct 1812–24 May 1816 Hospital Mate, during which time he served in Sicily, The Peninsula, Genoa, and Malta.
7 Mar 1814 Hospital Assistant. Served in the Peninsular War.
Malta Dec 1815 Hospital Assistant.
Malta Jan 1816 To England with invalids. Returned 24 Mar 1816.
24 May 1816 Left Malta.
1817 Wounded in the 3rd Kandyan War.
9 Nov 1820 Assistant Surgeon 67th (South Hampshire) Regiment of Foot.
6 Sept 1826 Staff Surgeon.
15 June 1830 Staff Assistant Surgeon Trigance was appointed Apothecary to the Forces vice Apothecary Henry Barnard Burman who died in Jamaica on 28 March 1830.
16 July 1830 Staff Surgeon Corfu. Embarked for Gibraltar.
1831 Staff Assistant Surgeon Corfu.
5 Dec 1834 Promoted surgeon after 22 years service. Had served between 20 and 21 years on full pay before gaining promotion.
Appointed Surgeon 30th (Cambridgeshire) Regiment vice Surgeon Samuel Ayrault Piper, who became surgeon to the Provisional Battalion. The vacancy on the staff was filled by Assistant Surgeon Edward McIver 23rd Foot on 19 December 1834.
12 Jan 1844 Retired.
3 Sep 1852 Died in London. The the five orphans of Surgeon Trigance were granted £25 from the Army Medical Officers Benevolent Fund.