He was originally in the 17th Bn and was moved to the 15th Bn after the Bn had departed for France in 1915. He was only with the 15th for a couple of months max and was medically returned to the UK in early April before 2nd Ypres; never returned and medically discharged as unfit and returned to Canada.
We have no Record of Service card for a Private George Henry Perks and he appears on no Nom Rolls or lists we have.