Harry Walker was born 1890, son of William and Jane Walker of High Copelaw, Woodham. William Walker was a farmer and had had 9 children. In the 1911 census Harry was 21, single, working on his father's farm.

Harry attested August 5, 1915. He was 26 years 5 months old. He was a carpenter and was willing to serve as a carpenter in the R. E. William was 5'9 1/2" tall and his next of kin was his father William. Harry had taken a trade proficiency test 27 July, 1915.

Harry was a sapper in the Royal Engineers, no. 108441. January 21, 1916 he embarked at Devonport, destination Alexandria. 3 months later, April 13, 1916, he embarked at Alexandria and disembarked 8 days later at Marseilles.

Harry had 10 days leave to 31 July, 1917 and leave 20 January to 9 February, 1918, and 12 days leave to 19 December, 1918. Harry was despatched to the UK 31 January, 1919 and received his Protection Certificate 4 February, 1919.