Special Sheets 1:5k & 1:10k (Chasseaud Collection)

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Messines
Messines
Series Number Id: GSGS 3172. On upper, left margin: Part of Sheet 28. On upper, right margin: sheet 8. "Trenches corrected to 9-4-16." "Ordnance Survey, 1916." Detail and grid grey; contours brown; water blue; German trenches red; British front pecked blue. Base details redrawn by 2nd Topo Section RE from Belgian map. Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC14; envelope_number: 369.
Ploegsteert Wood - east extension
Ploegsteert Wood - east extension
"1st Printing Co., R.E. G.H.Q (381)". [Early 1915 -from approximately Dec.1914/Jan.1915]. Detail black; wood and trees green; road fill and contours sienna. (Revised) squaring in red, at angle to sheetlines. British and German trenches shown in manuscript; at this early stage of the war it was not yet the practise to overprint the trenches., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 499
Poelcappelle : [3rd Battle of Ypres]
Poelcappelle : [3rd Battle of Ypres]
Sheet number: [Part of sheet 28]. Edition number: 4. "Trenches corrected from information received up to 24-9-17." "[5th] Field Survey Co. R.E. (2614) 23-9-17". Detail, grid and contours grey; German trenches and names, batteries, strong-points etc. red; concrete works marked "c"., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC14; envelope_number: 389, Manuscript on face: cross in circle E of Keerselare, S of Flora Cot. This map belonged to W. Ivor Grantham (5th Royal Sussex?).
Poelcappelle : [3rd Battle of Ypres]
Poelcappelle : [3rd Battle of Ypres]
Edition number: 1. "Trenches corrected from information received up to 3-8-17." "5th Field Survey Coy., R.E. (1352)". Trenches, batteries, strong points etc to 3rd August 1917. "Detail, grid and contours grey; German trenches red; overprint purple (Corps, Divisional & Inter-Brigade boundaries)., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC16; envelope_number: 423, Manuscript pecked blue crayon - British front line?
Point du Jour : [Arras Battlefield]
Point du Jour : [Arras Battlefield]
Series Number Id: GSGS 3457. [Trenches to March 1917]. "Ordnance Survey, March, 1917." [XVII Corps Front]. Detail, grid and contours grey; German trenches and names red. Used by Major J.C. Thomson MC (OC 20th Siege Battery, 8-inch hows). Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 526
Revision sheet to Cherisy [overprint] Guemappe : [Arras Battlefield]
Revision sheet to Cherisy [overprint] Guemappe : [Arras Battlefield]
Sheet number: part of 51b SW. Blue overprint: "Guemappe, edition 6, U.[[XVII] Corps] T[opo]. S[ection]. no. 238". "[3rd] Field Survey Co. (10,007) ... Sept., 1917". Detail, grid and contours grey; German trenches and names red; British trenches and names blue., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 505
Schwaben Redoubt : parts of St. Pierre Divion and Thiepval
Schwaben Redoubt : parts of St. Pierre Divion and Thiepval
Sheet number: [57d SE2]; Edition number: 1. Trenches to 20th October 1916. "1st Printing Coy R.E. 5th Section (349) 18-10-16." Battle of the Somme. Detail, grid & contours black; German trenches & names red (shown as before capture of Thiepval at end of September); British front chain-dotted black., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 518, MS on face: 1st Herts HQ, 7th N Lancs HQ, 56 Bde HQ. MS in margin: W.M. Dobson 2 Lt. 10.16. MS on reverse: T. Map. Thiepval & Schwaben. St. Pierre Divion. W.M.Dobson 2 Lt.
Second Army Front, map C : [Boesinghe, Pilckem ; Battle of Messines / 3rd Battle of Ypres]
Second Army Front, map C : [Boesinghe, Pilckem ; Battle of Messines / 3rd Battle of Ypres]
Series Number Id: GSGS 3538. "Ordnance Survey, April, 1917." [Trenches to April 1917]. Detail and grid grey; water pale blue; German trenches red with names in blue. No contours., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 481
Second Army Front, map G : [Zillebeke, Shrewsbury Forest]
Second Army Front, map G : [Zillebeke, Shrewsbury Forest]
Series Number Id: GSGS 3542. [Trenches to April 1917]. "Ordnance Survey, April, 1917." Detail and grid grey; water pale blue; German trenches red with names in blue. No contours., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 480
Second Army Front, map H : [Zwarteleen, Hollebeke]
Second Army Front, map H : [Zwarteleen, Hollebeke]
Series Number Id: GSGS 3543. [Trenches to April 1917]. "Ordnance Survey, April, 1917." Detail and grid grey; water pale blue; German trenches red with names in blue., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 478
Second Army Front, map J : [St. Éloi, Wytschaete]
Second Army Front, map J : [St. Éloi, Wytschaete]
Series Number Id: GSGS 3547. [Trenches to April 1917]. "Ordnance Survey, April, 1917." Detail and grid grey; water blue; German trenches red, with names in blue. No contours., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 477
Somme-Ancre-Gebiet, Blatt 14 N.O. (Havrincourt) : [Battle of Cambrai]
Somme-Ancre-Gebiet, Blatt 14 N.O. (Havrincourt) : [Battle of Cambrai]
Battle of Cambrai - for 14th Heavy Artillery Group (artillery preparation). [Trenches to November 1917?] "Bearbeitet von der V.A. [Vermessungs Abteilung = Field Survey Unit] 23, nach eigenen Erkundungen, Fliegerbildern und Beutekarten" [from intelligence, air photos and captured documents]. British original photostat on tracing cloth of captured German map. British translation of reference attached: Legend - trenches, dugouts, mines, MGs, Minenwerfer, Regt & Batt HQs, wire entanglements, light rlys, wells. Detail, etc grey. Manuscript overdrawing for German defence scheme as per Legend in black, blue and red ink., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC16; envelope_number: 466, Manuscript on reverse: 14 H[eavy] A[rtillery] G[roup]. Used by Major J. C. Thomson MC (OC 20th Siege Battery, 8-inch hows).
St. Jean
St. Jean
"2nd Army. Sheet 3." On upper, left margin : Part of sheet 28. "Trenches corrected to 11th Nov. 1915. 1st Printing Co., R.E (2) 585." "O.S.O. 1915." Detail, grid and contours grey; German trenches red; 2-figure coordinates, and additional farm names in British and German areas blue., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC18; envelope_number: 536, Manuscript on reverse: St Jean.
The Harp : [Battle of Arras]
The Harp : [Battle of Arras]
Sheet number: [51 SW1]. [Trenches to 3rd April 1917]. "VII Corps Topo Section". "3rd Field Survey Co. R.E. (1494)". On lower, right margin: No. 43. Penciled in upper, right corner: Fig 37. Detail, grid & contours black; German trenches red., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 492
Violaines - La Bassée
Violaines - La Bassée
Series Number Id: GSGS 3084; Sheet number: [36 SW1]. [Trenches to end-June 1915]. "O.S.O. 1915." Detail, grid & ditches grey; canal, streams, some ditches & grid capital letters blue; German trenches, batteries, intelligence up to 29th June & 2-fig coordinates red; British front solid grey line. Not printed on reverse. This sheet was produced after the inverted First Army series but immediately before the first regular series 1:10,000 sheets., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC21; envelope_number: 647, Manuscript on face: a few additional road & place names in faded ink, mostly in NW corner.
Violaines - La Bassée
Violaines - La Bassée
Series Number Id: GSGS 3084; Sheet number: [36 SW1]. [Trenches to end-June 1915]. "O.S.O. 1915." Detail, grid & ditches grey; canal, streams, some ditches & grid capital letters blue; German trenches, batteries, intelligence up to 29th June & 2-figure co-ordinates red; British front solid grey line. Not printed on reverse. This sheet was produced after the inverted First Army series but immediately before the first regular series 1:10,000 sheets., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC15; envelope_number: 393, Manuscript: additional German defences in pencil, east of Rue d'Ouvert and Rue du Marais.
Wez. Macquart
Wez. Macquart
Sheet number: Part of sheet 36. On upper, right margin: 2nd Army, sheet 12. "1st Printing Co., R.E. (2) 785. Trenches corrected to 5th Feb 1916." "O.S.O. 1915." Base detail from 6th edition of regular series 1:20,000 and equivalent 1:10,000. Detail, grid and contours grey; water blue; German trenches and 2-figure coordinates red., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 528, Manuscript on face: British trenches and names in green ink. British front and sector numbers in red ink. Manuscript in margin: G.S. Dickinson 2nd Lieut. 7th Lincolns.
Wez. Macquart
Wez. Macquart
Sheet number: Part of Sheet 36. On upper, right margin: 2nd Army, sheet 12. "Trenches corrected to 9th October 1915. (No. 497)." "O.S.O. 1915." Base detail from regular series 1:20,000 and equivalent 1:10,000. Detail, grid and contours grey; water pale blue; German trenches red; 2-figure coordinates purple., Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 527, Manuscript on face: pencil mark at Ruelle de la Blanche. Manuscript on reverse: E.R. Knox [?], Church on entrance [?], 8 degrees R[ight] of Des Tillerie [?] = Wez M[acquart], 8 1/2 degrees L[eft] of Des Tillerie [?] = Presmesques Church, 2 minutes fast.
Willow Road : [Festubert Region 1918]
Willow Road : [Festubert Region 1918]
Sheet number: [36 SW3]. "Intelligence Map No. 5." "Trenches corrected to 16-8-18." "[1st] Field Survey Co., R.E. 6228." "Corps Topo Section." Detail, grid & contours grey; German trenches & names red; British trenches & names blue; Intelligence (Shell-hole defences, Batteries, Dugouts, OPs, TMs, MGs, Dumps, etc.) in blue; roads & tracks yellow. From Major J.C. Thomson MC (20th Siege Battery), Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 509
Windy Corner : [Givenchy-lez-la-Bassée Region 1918]
Windy Corner : [Givenchy-lez-la-Bassée Region 1918]
"Intelligence Map No. 5." Trenches to 16th August 1918. "[1st] Field Survey Co., R.E. 6229." "Corps Topo." "T.419. Information from all sources. N.B. It has only been possible to insert the main targets in the crater area, owing to scale of map. An Intelligence Map, showing all the targets will be issued later." Intelligence in blue; roads & tracks yellow; detail, grid & contours grey; German trenches & names red; British trenches & names blue. Manuscript on reverse: OC 20 S[iege] B[attery] & artillery correction for individual guns. Used by Major J.C. Thomson MC (OC 20th Siege Battery). Location: Research Collections; Fonds: WW1 Trench Maps: France; Box number: PC17; envelope_number: 503

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