[Ficheux, Blaireville, Monchy-au-Bois : Battle of the Somme]
Series Number Id: UNKNOWN. Sheet number: 51c SE. Edition number: 2D. Shows trenches, German rear organisation, artillery intelligence, battery positions and arcs of fire 4-12-16. [France, sheet 3]. "Trenches corrected to 31-8-16"; below in purple overprint, "4.12.16". "Ordnance Survey 1916." "3rd Field Survey Coy R.E. 3rd Army (1220)". Detail, grid and contours grey; water blue. German trenches red; British front pecked blue. Overprinted in purple: [German battery positions and arcs of fire]; Reference; list of square positions of trench mortars. Purple, green and orange-brown plates registered with needles. Overprinted green: military tracks and observation posts. Overprinted orange-brown: light railways and supply dumps., WW1 Trench Map Collection: Box PC16, Envelope 435.