[Ypres, 3rd Battle of : trenches, roads and duckboard tracks]
Series Number Id: UNKNOWN. Edition number: 1. At head of map: O.13-D.15. "Field Survey Co. R.E. (1337) 31-7-17". "Trenches corrected from information received up to 3-7-17." Grey detail and grid (without contours). German trenches in red. Overprinted by Corps Topo Section in purple with XIV Corps and Divisional boundaries (50th (Northumbrian) Division in centre) and tracks: Clarges Street, Hunter Street, Railway Street, Langemarck Road, Track 'A', Track 'B', apparently for the attack of 26 October towards the end of the Third Ypres battle. Manuscript pencil markings showing microphone bases of 'Q' and 'R' Sound Ranging Sections., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC20; envelope_number: 641.