Thanks for trying - it was from a site where Canadian troops were training, and there are MANY other alcohol bottles from the site, so a liquor is my guess too :)
I have come across this bottle, clearly Canadian, but in England from a World War 1 context. It is 10" tall 3" diameter with diagonal ribbing. There is a clear space for a label and at the top of this is embossed Edward Auld, Montreal. I can find no information about the bottle or the name on...