When I was on the Great War battlefields recently......

[Gil Boyd]

Interestingly, I found this image of the LEWIS GUN Specialist course for units of the Canadian Mounted Rifles Battalion at Camblain L'Abbe which is near Ypres on the monring of the 13th October 1917. One has to assume MCRAE is on there, but which one? Nothing like a bit of detective work when it comes to the British & Commonwealth Armies!!
Also the CMR recruitment poster

On page 24 of the 50 on record if you expand the image as the words are poor, it says clearly there in pencil Returned from Course 13/10/17
All medical reference on page 44 in Military speak ie G.S.W means: gun shot wound and earlier on page 22 an entry Missile Fragment