Hello! I am coming to you for your combined knowledge and insights. I have done a fair bit of my own research in Canada and the UK but have hit a dead end and hope someone else may now be able to help.
These two brothers had the photo below taken around 1916/17 in either Canada or UK. I have the attestation papers for the gentleman on the left indicating he joined the Canadian Army. I can find no such papers for the seated gentleman. I do know that he served in the Glasgow Highlanders in the first decade of the twentieth century before immigrating to Canada with his brother in 1912. I wonder if he joined a British regiment in 1917, although I can not see his name in any list of of men who joined the Highlanders. So my question is - can anyone identify either of these uniforms? Thanks in advance for any help you may be able to help!
Image link:
https://ibb.co/dJEYbG