Martin joined Northern Bank on 16th June 1897 at Head Office. A transfer to Downpatrick followed in 1904.
On ‘Ulster Day’, Saturday, 28th September 1912, a James Martin signed the Ulster Covenant at the Assembly Hall, Downpatrick.
Whilst in Downpatrick, Martin, aged 35, volunteered and enlisted into the Cadet Company, 19th Bn. RIR as a Private with his colleague, F W Orr and an Ulster Bank, Downpatrick official named J R Buchanan was later to die from wounds in 1st April 1918 in a Red Cross hospital in Rouen.
Martin volunteered for the Officer Training Corps (OTC) based in Ballykinlar. Martin was Gazetted as 2nd Lieutenant into the 19th Bn. RIR and later promoted to Lieutenant and Acting Captain. Later he joined the British Expeditionary Force and was posted to the 10th Bn. RIR and then attached to the Royal Warwick Regiment. He saw service in Messines on 7th June 1917.
He received a severe gunshot wound to his right shoulder. Demobilisation came in January 1919 when he was invalided out. He was awarded the British Victory Medal and the British War Medal.
Following demobilisation, Martin rejoined the Bank on 1st April 1919 in Downpatrick.
A transfer to Castlewellan as Manager followed in 1924. The Northern Banking Company Limited Centenary Volume 1824 to 1924 lists a J Martin as Manager of Castlewellan
Martin retired on 30th June 1941 and died on 3rd May 1953.
Martin is named on the Roll of Honour in Downpatrick Presbyterian Church.