on to fight at the Siege of Ciudad Rodrigo in January 1812, the Siege of Badajoz in April 1812 (where he was wounded) and the Battle of Salamanca in July 1812 before being promoted to lieutenant colonel on 17 August 1812. After that he took part in the Siege of Burgos in September 1812, the Battle of Vitoria in June 1813 and the Siege of San Sebastián in July 1813 as well as the Battle of Nivelle in November 1813 and the Battle of the Nive in December 1813 (where he was wounded again). Following his return to England, he transferred into the Coldstream Guards on 25 July 1814 and was appointed a Knight Commander of the Order of the Bath on 2 January 1815. During the Hundred Days, as a staff officer with the 5th Division, Gomm took part in the Battle of Quatre Bras and the Battle of Waterloo in June 1815. At Waterloo he rode a charger called "George", which survived until 1841. He was awarded the Russian Order of St. Anna, 2nd Class on 8 October 1815. He acquired a property at 6 Upper Grosvenor Street in London in 1826. Gomm was promoted to colonel on 16 May 1829 and to major-general on 10 January 1837. He became Commander of the troops in Jamaica in 1839 and in that role observed that yellow fever, a major cause of death among the British troops stationed in Jamaica, was far less prevalent in the mountains and he therefore established new barracks at Newcastle, Jamaica, high in the mountains. He was awarded an honorary Doctor of Laws degree by Cambridge University in 1842. Gomm was briefly General officer commanding Northern District in early 1842 before being appointed the Governor of Mauritius in June 1842. Promoted to lieutenant-general on 9 November 1846, he was sent out to India in Summer 1849 to become Commander-in-Chief, India arriving only to discover that his appointment had been cancelled in favour of Sir Charles Napier. Gomm was then initially chosen to become Commander-in-chief of the Bombay Army with the local rank of general in September 1850 but, following Napier's resignation as Commander-in-Chief, India, Gomm succeeded him in December 1851. In that role Gomm introduced promotion examinations for officers. Promoted to full general on 20 June 1854, he retired from active service in 1856 and, after advancement to Knight Grand Cross of the Order of