I found his military records on ancestry. Do you have access? Let me know if you don't.
This is what they say:
He was not married, he was living at the Lacy Hotel, Winnipeg, Mr J.H. Lund was his next-of-kin, and was a Railway Fireman. He was 5'8", fully expanded chest size of 37 3/4" with 2" expansion room, fair complexion, fair hair and grey eyes. He had no distinguishing marks or peculiarities. His religion was Epistical (their spelling) - this might help for church records.
This also tells you that he married after 1916, which is helpful. There is also an address for J.H. Lund if you want that.
That's really all they say.
There isn't any discharge papers attached with follow-up for after the war.