He was born on 29 July 1896. He had a sister, Jeanie. Jamie signed up to fight in the war on his 18th birthday. While fighting on the battlefields, he was promoted to the rank of Corporal. In 1916, he was stationed in the Somme, where he met the Tenth Doctor and Gabby Gonzalez and fought the Weeping Angels. He became romantically entangled with Gabby, but they decided against pursuing a relationship.
He helped the Tenth Doctor defeat the Angels by detonating the explosives in the tunnels that the Weeping Angels were in, in an act of self-sacrifice, but the Tenth Doctor saved him by shielding him with the TARDIS.