Source: Per news clipping post by David Archer at 18th Battalion Facebook Page (not group).
Appears to have gone by the surname Coltman in private life.
He was TOS the 18th Battalion on 10 October 1916 and after arriving in France was attached to the 2nd Canadian Entrenching Battalion on 5 November 1916. He then was attached 5th Field Company Canadian Engineers on 13 November 1916. On 26 November 1916 he was returned to the 2nd Cdn. Entrenching Battalion until 17 January 1917 when he was attached to the 14th Canadian Machine Gun Company. He returned to the entrenching battalion on 27 February 1917 and was to then go to the 18th Battalion on 5 March 1917.
He was attached to the 4th Canadian Trench Mortar Battery from 13 August 1917 to 12 October 1917.
He served with the 18th Battalion for almost one month until wounded in the right knee on 9 November 1917.
He was treated in England and returned to the 18th Battalion on 31 August 1918 and his service classification was changed to B1 on 29 October 1918 and he was TOS with the Canadian Labour Pool where he was sent back to England and eventually back to Canada for demobilization on 21 March 1919 at Toronto, Ontario.
War Diary of the 18th Battalion CEF 