Stanley Welsh was born in Stawell, VIC and was a Salesman in Ballarat East when he enlisted in the 24th Battalion, 4th Reinforcement on 12 July 1915 at the age of 20 after having served for four years in Senior Cadets, and Citizen Military Forces. His unit embarked from Melbourne, Victoria, on board HMAT A20 Hororata on 27 September 1915. On 12 August 1916 he was wounded with a gunshot wound to the back and left shoulder and was evacuated to England, managing to march in from Hospital a month later and granted furlough in October. On the 13th of October, while in Belgium, it was reported Corporal Welsh was killed in action.

His brothers, Pte Leonard Allan Joseph Welsh, 6th Bn, returned to Australia, 7 February 1919 (Tree No. 3923); Pte Thomas Ernest Welsh, 6th Bn, returned to Australia, 31 July 1918. (Tree No. 1919); also served
Tree No. 3348