The two photographs on Page 39 were taken by an RE8 of 6 Squadron, part of the squadron's aerial reconnaissance operations over the Western Front during WW1.

 

The photographs were taken to show the effect of the pre-bombardment allied barrage on targets west and east of the Ypres-Commines Canal immediately prior to the Battle of Messines, map coordinates 28. O. 4. c and 28. I. 35. b. The upper photograph was taken on the 5th June 1917 and the date of the lower photograph was 3rd June 1917.