[Bertry, Mazinghien, south of Le Cateau : final advance 1918 [area of Wilfred Owen's death]]
Series Number Id: GSGS 2742. Sheet number: 57b SE. Edition number: 2a. "Enemy organisation 30-9-18." "Trenches revised from information received to 30-9-18". "Provisional until publication of ed. 3." "Field Survey Bn. (10851) 1-10-18". "Ordnance Survey, (O.B.) September, 1918.", Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC25; envelope_number: 753, German trenches, enemy organisation and detail corrections in red; detail and grid grey; contours brown. ** in SW corner. Manuscript on face: small markings near Vaux Andigny.