[Ypres, 3rd Battle of : Fifth trench map and soil [going] map for tanks, etc.]
Series Number Id: UNKNOWN. Sheet number: part of sheet 28. Edition number: 1. At head of map: P.13-E.16. In blue overprint in top margin: "Soil map. The information on this map is taken solely from the statements of refugees." "Trenches corrected to 1-4-17." "5th Field Survey Coy, R.E. (1,130) 24-6-17 [number crossed out and replaced with blue overprint] (1,275) 23.7.17." Grey detail. German trenches and rear organisation in red. Areas shown in tints of blue: dry areas; inaccessible after heavy rains; and, inaccessible for heavy vehicles at all times., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC18; envelope_number: 540.