Sheet number: part of Sheet 51. Canal du Nord, Hindenburg Line and Marquion Line, 1918; trench, counter-battery and Intelligence target map. "Trenches corrected to 22-9-18." "[1st] Field Survey Battn 6941 (numbers crossed out and replaced with red overprint) 6961." Detail and grid grey; contours ochre; pale blue water. Approximate British Front Line in dark blue. Shows all trenches in blue, including the German positions of the Hindenburg Line, Canal du Nord Line and Marquion Line.
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Field Service Battalion, Royal Engineers</div>
McMaster University Research Collections; Fonds: WW1 Trench Maps: France, Box no. 11, envelope no. 015, database no. 334