Hi John
1931 is the latest census released in Canada, so unless he moved to the States, that's all you will find for Census info. That's probably all you will find for any Vital Stats info in Manitoba as well -- trying to protect the privacy of living people.
You could, though, try some other angles. From the Census, you have a street address. You could try Directories such as Hendersons to see if he stayed at that address for a while. You could try newspapers to see if you can spot his marriage to Rose or the obit of either or them. If you can tell what his career/occupation was from the 1931 Census, maybe you can develop some hypotheses as to his next career move, and test them out.
You mention the military -- did you try
https://library-archives.canada.ca/eng? They have a lot of military records.
If you have a WikiTree profile for him, please link it here, and I'll poke around too. I have quite a bit of experience in Manitoba records.
Cheers
Shirlea