The two photographs on Page 19 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 were taken over Dammstrasse and Pheasant Wood, as defined by mapping coordinates 28. O. 9. D and 28. O. 9. B. The first photograph was taken on the 22nd March 1917 and the second on the 8th June 1917, 1 day after 19 mines were detonated beneath the German lines along the Messines ridge at the start of the Battle of Messines