He went on to become a Medical Officer, a general practitioner and a lieutenant colonel in the RAMC, commanding field ambulances in the Territorial Army (TA).
On 9 July 1950, he was commissioned in Royal Army Medical Corps as a lieutenant to undertake his National Service.
[8] Upon moving to the Isle of Man, he became a village commissioner (similar to a parish councillor) at Laxey in 1974, before standing for the House of Keys for Garff in 1976.
Dr Mann decided to stand for the House of Keys, as he knew ministers would be expected to be democratically accountable.
Mann died on 21 June 2013 and his funeral was held in the Lonan Parish Church in the Isle of Man.