Series Number Id: GSGS 2769 [later redesigned 2780]. Sheet number: 36 SW3. Edition number: 2. [Trenches to end-March 1915]. Detail & grid black; German trenches & wire red; water & ditches blue; British front pecked black; arbitrary target numbers in circles black. Similar received in GSGS Map Room 1-4-15. One of early 1915 series of inverted sheets covering First Army front, this sheet was a reduction of two 1:5,000 sheets, Bois du Biez [1st ed.] and Fauquissart - Aubers, 2nd ed. Compared with first edition, it has considerable revision and additions to both the background detail and to the trench plate (comparison made with GSGS 2769a, Fauquissart 1:20,000, OSO 1915)., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC15; envelope_number: 397, Manuscript on face: Hew H. Greig 2nd Lieut B Coy.