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

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Both photographs were taken by an RE8 of 6 Squadron over a section east of Battle Wood (Kleine-Zillebeke), as defined by the mapping coordinates 28. J. 31. C, an area measuring 500 yards square. The first photograph was taken on the 24th March 1917 and the second on the 13th June 1917, 6 days after the 19 mines were detonated beneath the German lines along the Messines ridge.