John Brown Coubrough (Coubrough-17) was in the 152nd (Weyburn-Estevan) Infantry Battalion, the 32nd Infantry Battalion and last with the 5th Infantry Battalion when he was killed in action, so I have used the 5th for the categorization. I added this category by adding the Great War template, so you can check and see how I did this on the profile.
For Simon Peter Coubrough (Coubrough-18) you can reuse the same template from his brother's profile and just change the enddate parameter to 2 May 1917.