Source: Per news clipping post by David Archer at 18th Battalion Facebook Page (not group).
Family Search: When Private Gladwyn Washington Haskett was born on 14 December 1889, in Markdale, Grey, Ontario, Canada, his father, George Martin Haskett, was 40 and his mother, Mary Jane “Min” Rorke, was 30. He had at least 1 daughter with Wife. He immigrated to Eastport, Boundary, Idaho, United States in 1930 and lived in Grey, Ontario, Canada in 1901. He registered for military service in 1915. In 1915, at the age of 26, his occupation is listed as time keeper, railway in Markdale, Grey, Ontario, Canada. He died on 1 November 1959, in Penticton, British Columbia, Canada, at the age of 69, and was buried in Lakeview Cemetery, Penticton, Okanagan-Similkameen, British Columbia, Canada.
Note that this man was also assigned the reg. no. of 409137. 408101 is the reg. no. in the LAC database.
Private Gladwin Washington Haskett. Regimental No. 408101.
This man enlisted with the 37th Battalion on 11 June 1915 at Niagara Camp, Niagara-on-the-Lake, Ontario. He was a farmer by trade and had no prior military service.
He arrived in England aboard the SS Lapland on 11 December 1915 and was transferred to the 12th Reserve Battalion at Shorncliffe. He was then transferred to the 18th Battalion on 7 May 1916 and arrived “in the field” on 2 June 1916.
On 3 April 1917, he was attached to the 2nd Canadian Divisional Pack Mule Company.
It was with this unit which he was wounded with a GSW to the left leg and thigh on 18 April 1917, and he was returned to England aboard the H.S. Jan Breydel for treatment.
His wounds were of such a nature that he was not returned for further combat duty, and was returned to Canada 28 March 1918.
He was discharged due to medical unfitness at Toronto, Ontario, on 27 June 1918.
Note that his name is spelled Gladwin on his service file.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 