If Sergeant Bisset was your grandfather's uncle, then surely that makes him your great-great-uncle, not your great-grandfather as you seem to imply in your post? This is not a family history site so it is most unlikely that somebody on here will have any knowledge of your ancestor.
The Scottish National Red Cross Hospital stood where the Bellahouston Sports Centre is now and was really only in existence for a few years. I did a quick online search in the National Register of Archives for Scotland (NRAS) but couldn't come up with anything that related to the hospital.
Perhaps if you contacted the British Red Cross they might be able to give you some information or point you in the right direction. This
is a link to the museums and archives page on their website.
Best of luck.