Thomas entered the war in France on 30th April 1915. He, along with 1717 Pte George McCondach and 1696 Pte Adam Thomson Milne, was killed by shell-fire at Black Hut, during the attacks on High Wood in the Battle of the Somme. The bodies of the three men were extricated from the spot where they had been buried by the shells with great difficulty and risk under fire, and were brought back on the night of the 24th, by Capt J S Stewart, the Medical Officer of the A.D.S. Their funeral took place the next day at the ground besides the communal cemetery of Mericourt. He was the son of Sjt John Jamieson of the 1st Gordon Highlanders, who also died in the war - (Information kindly provided by Thomas's family) and Mrs M Jamieson of 55 Charlotta Street, Aberdeen. [Portrait photograph courtesy of Thomas's family]