APPENDIX OO/7

SECRET                                                                                             Copy No. 18

8^th Divisional Artillery Operation Order No. 7.

4^th June 1916

1. The 45^th Brigade R.F.A. and “Z” Battery R.H.A. less 57^th Battery (Hows) complete and 1 Section 18-pdr Batteries, will move to Billets in BEHENCOURT in relief of 152^nd Brigade R.F.A. 34^th Divisional Artillery on the night of the 5^th/6^th June 1916.

1. Lieut-Colonel A.T. BUTLER, C.M.G., R.H.A. will be in command of the above Artillery until the return of Lieut-Colonel H.W. HILL, when he will return to the Left Group Headquarters.

1. The Adjutant and staff of the 5^th Brigade R.H.A. will remain with the Left Group Headquarters.

1. The move will be in accordance with Table “A” on reverse.

1. No move will take place between 3 a.m. and 8 p.m.

1. The Left Group will remain as at present.       One Subaltern Officer being in command of each section in Action.

1. Billeting parties will be sent on in advance to report to the Adjutant 152^nd Brigade R.F.A. who will arrange the taking over of Billets.

1. All moves to be reported to this Office.

C.R Gover Major R.A.

Brigade-Major. 8^th Divisional Artillery.

4.6.16

Copies to:-

5^th Bde R.H.A.                        1

33^rd Bde R.F.A.          2

45^th Bde R.F.A.          3

IIIrd Corps R.A.         4

8^th Division.                 5

34^th Div. Arty.             6

A.D.V.S.                     7

Signal Coy.                 8

Div. Train.                   9

S.S.O.                          10

Retained                      11 to 18.

VISIBILITY TABLE BETWEEN DAWN AND SUNRISE

Hour                Time before Sunrise                objects discerned

Hrs.   Mins.

2.5                               1         44         Break of dawn.

2.35                             1         14         Read watch.

2.45                             1         4           See chalk trenches at 600 yards.

2.50                             –          59         See earth trenches at 600 yards.

3.20                             –        29         Distinguish trenches a mile off.

No aeroplane up.         See aeroplane easily flying at 3000’

(Looks black cannot see colours.)

3.15                            –         34          Distinguish men’s heads above trenches at 100 yards.

3.25                          –        24          See foresight of rifle and men at 300 yards    sufficiently easy for accurate firing.

3.40                             –         9            Perfect light to see any objects.

The morning was an average summer morning.

Sky with thin covering of clouds.

June 3^rd 1916

Fourth Army Q.S. 137

XIIIth Corps No. Q.S.73/50

18^th Div No Q.P. 13/3

SECRET

XIIIth Corps

In continuation of my Q.S.97 dated 30^th May, the Army Commander has approved of the following amounts of Grenades, Trench Mortar Ammunition and S.A. being dumped in front of Railhead:-

No of Divns.   No per Divn to be dumped.                Total to be dumped

(in excess of normal establishment.).

No 3         3                                         5,000                                                 15,000

No 5        3                             25,000                                                 75,000.

(b) TRENCH MORTAR AMMUNITION

No of Mortars.            Rounds per Mortar                  Total rounds

to be dumped.                                    to be dumped.

2” (Medium)          36                                     430 (70 already dumped                     15,480.

making 500)

3” (Stokes)             72                         200 (300 already                                14,400

dumped making 500)

240 MM (heavy)    12                         100                                                      1,200

(c) S.A.A.

No of Divns.  No of boxes per Division in front line to be dumped.  (This includes present trench reserve and all ammunition other than the 170 rounds carried on the man and the authorised establishments.)

3                                              1,750 (per Division)                            5,250 (TOTAL)

2. Table E shows the number of trucks which will be required daily. The days of arrival cannot be altered.

3. The echelons of S.A.A. will be filled prior to the commencement of operations.

4. Dumps to be made in the trenches will be formed as late as possible and not until the Brigade and Divisional Dumps are completed.

Sd. H.E. SUTTON, Major General

D.A. & Q.M.G., Fourth Army.

Headquarters.

Fourth Army

2^nd June 1916

Fourth Army Q.S. 137

XIIIth Corps No. Q.S.73/50

18^th Div No Q.P. 13/3

SECRET

XIIIth Corps

In continuation of my Q.S.97 dated 30^th May, the Army Commander has approved of the following amounts of Grenades, Trench Mortar Ammunition and S.A. being dumped in front of Railhead:-

No of Divns.   No per Divn to be dumped.                Total to be dumped

(in excess of normal establishment.).

No 3         3                                         5,000                                                 15,000

No 5        3                             25,000                                                 75,000.

(b) TRENCH MORTAR AMMUNITION

No of Mortars.            Rounds per Mortar                  Total rounds

to be dumped.                                    to be dumped.

2” (Medium)          36                                     430 (70 already dumped                     15,480.

making 500)

3” (Stokes)             72                         200 (300 already                                14,400

dumped making 500)

240 MM (heavy)    12                         100                                                      1,200

(c) S.A.A.

No of Divns.  No of boxes per Division in front line to be dumped.  (This includes present trench reserve and all ammunition other than the 170 rounds carried on the man and the authorised establishments.)

3                                              1,750 (per Division)                            5,250 (TOTAL)

2. Table E shows the number of trucks which will be required daily. The days of arrival cannot be altered.

3. The echelons of S.A.A. will be filled prior to the commencement of operations.

4. Dumps to be made in the trenches will be formed as late as possible and not until the Brigade and Divisional Dumps are completed.

Sd. H.E. SUTTON, Major General

D.A. & Q.M.G., Fourth Army.

Headquarters.

Fourth Army

2^nd June 1916

VISIBILITY TABLE BETWEEN DAWN AND SUNRISE

HOUR                        TIME BEFORE SUNRISE               OBJECTS DISCERNED

Hrs.   Mins.

2.20                             1         30         Break of dawn.

2.40                             1         10         Read watch.

2.55                             –         55         See chalk trenches at 600 yards.

3.5                               –          45         See earth trenches at 600 yards.

3.25                             –         25         Distinguish trenches a mile off.

No aeroplane up.         See aeroplane easily flying at 3000’

(Looks black cannot see colours.)

3.20                          –         30        Distinguish men’s heads above trenches at 100 yards.

3-30                              –         20        See foresight of rifle and men at 300 yards    sufficiently easy for accurate firing.

The morning was too dull to give perfect light to see any objects

a time for this.

The morning was a grey summer morning.

Cloudy sky.

2^nd June 1916

WAR DIARY Of Headquarters 55^th W. Lancs Divisional Artillery

From 1^st April 1916 to 30^th April 1916

April 1^st 8.30 a.m.   8^th Lancs How Bty fired on active hostile battery X.10.c.60.24 getting direct hits on 3 emplacements – 2 explosions – aeroplane observation.  10^th & 11^th Lancs Batteries Kept fired salvoes of shrapnel during the night to prevent removal of guns.

3 p.m.        Centre Group carried out bombardment in accordance with attached – result not very satisfactory – barrier was not completely breached.                                                                                       Appendix I

2^nd       1.30 p.m.      WAILLY was heavily shelled –

3 p.m.         6 H.A.G. – 6” Hows – 8” How – 9.2” Hows 2 4.7 batteries – 1 60 pr battery-

D.A. – 5 18 pr batteries – and – 2 4.5 How Batteries retaliated on FICHEUX.

6 p.m.         18 prs again fired on FICHEUX for further shelling of WAILLY – results satisfactory –

3^rd         3 p.m.         Bombardment in accordance with Appendix II – Result most satisfactory – the 9.2” How levelled the house to the ground.  The enemy retaliated at 4 p.m. on BRETENCOURT – in reply to this 6^th H.A.G. 2 4.7 batteries 1 60 pr battery, 2 8″ Hows, 1 9.2” How with French heavy guns responded on HENDECOURT

5.45 p.m.     55 D.A. 3 4.5 How batteries – 2 18 pr batteries responded on HENDECOURT.

There was some further retaliation to which 2 4.5” How batteries made instant reply.             Appendix II

3/4^th     After dark    Relief of 68^th by A/123^rd and 88^th by D/124^th Batteries in accordance with Order No 15 as amended by Order No 18.     Appendix III.

4/5^th     After dark    Section 12^th Lancs Bty from Right to Left Group to form 6 gun bty with A/123^rd.                         Appendix IV

5^th        11 a.m.        Relief of 14^th Bde H.Q. and B.A.C. by Section 123^rd B.A.C. completed –

6^th        6 p.m.         For 4.2” How fire on F Sector. R/4 W.L. and 7^th Lancs How Bty replied on German front line opposite trenches 184 -194.

8^th         2 p.m.          BELLACOURT heavily shelled – 60 4.2” How fired into 7^th Lancs Bty position

3.15 p.m.     Chastisement on BOIRY.  3.15 p.m. with 7 4.5” Hows 8 – 4.7” guns 4 120 mm French – This concluded hostile activity

9^th       12.10 p.m.    BEAUMETZ heavily shelled – about 120 7.7, 10.5 and 15.0 cm shells.  Casualties besides 2horses and some cows killed 2 men slightly wounded.

9^th           3 p.m.       Chastisement of BOIRY as on the previous afternoon.  This concluded the day’s activity.

12^th         4 p.m.       Bombardment in accordance with Appendix 5.  Result as far as could be observed satisfactory – Raining – but 9.2 Hows obtained direct hits.                                                                                      Appendix V

13^th         9.55 p.m.   Hostile aeroplane dropped 2 bombs outside BEAUMETZ and one near BASSEUX.

17^th         4 p.m.        Wire cutting at X.3.b.5.8 ½ by Section 3^rd Lancs Bty from R.32.a.2.9 – Guns shot well but the wire was not completely cut – it was at least 30 x in depth.  On conclusion the section was withdrawn just in time to avoid retaliation of 5.9”’s at 5.15 p.m. and returned to its battery after dark.                     Appendix VI

18^th         2a.m.         18 prs centre group and Howitzers cooperated in a successful raid on enemy front line R.34.b. by 8^th L’pool (Irish).  Fire was well directed and helped to make the operation successful.

19^th         3 p.m.        Retaliation on FICHEUX for shelling WAILLY – H.A.G. fired 71 rds in 3 minutes and 5 18 pr batteries and 2 Howitzer Batteries cooperated.

19-20^th

20-21^st                      Reliefs in accordance with Operation Order No 21.                                                              Appendix VII

24^th                          5.45 hostile aeroplane dropped a bomb on 7^th Bty wagon lines near MONCHIET killing 3 horses – 10 others had to be destroyed owing to injuries – No men injured –

3 p.m.         8” How fired in accordance with G.O. 24 – getting 5 rds into the sap – 3 rds into German wire – 2 rds into our own wire (not unexpected) and 4 blinds.  The result most satisfactory – infantry much pleased.                                                                                                                                               Appendix VIII

5 p.m.         Wire cutting in accordance with Order 22.                                                                   Appendix IX

26^th       5.15 a.m.     Aircraft dropped 2 bombs near BELLACOURT H.A.G. retaliated 6 a.m.

27^th       6-73 a.m.    A & B/125^th heavily shelled by 5.9” How – no casualties to personnel – 1 gun A/125 dial sight (No 7) and shield damaged – (out of action) – Ranging by aeroplane –

3 p.m.        6” How on saps opposite F Sector.

Hostile aeroplanes very active and observation balloons watching and observing fire.

30^th         6 a.m.       166^th Inf – took over extra front in accordance with Appendix X.

Orders received for artillery to cover this line from May 6^th.

Period 24-27^th marked by hostile counter battery activity – observation balloons up in all directions and aircraft observing.  No batteries were knocked out and only one gun (mentioned above) damaged – 14^th Bty preparing a new position.

1. Bueson

Major

B.M. 55 D.A.

1^st May 1916

No of Batteries required for Wire Cutting

and Distribution of Reserve Artillery.

1. The wire to be cut amounts approximately to :-       Along front line 2300 yds.       Along rear lines 7000 yds.       total 9300 yds.

1. The Medium Trench Mortars will assist in cutting the wire on the front line, thus reducing the number of rounds of 18-Pdr ammunition required for this purpose. On the other hand owing to distance and difficulty in observation a liberal allowance should be allowed for wire on rear lines.

1. Assuming the bombardment to last 3 days 3100 yds require cutting daily. The following shows approximately number of yards per battery, per gun, and number of rounds per gun per day assuming that 12 batteries, 15 batteries or 18 batteries are available:-

12 batteries = 260 yds per battery = 65 yds per gun = 520 rds per gun p. day 15 batteries = 200 yds per battery = 50 yds per gun, = 400 rds per gun p.day.

18 batteries = 170 yds per battery = 42 yds per gun = 336 rds per gun p.day.

(N.B. allowing for 8 rds per yard of wire.)

4. It would therefore be advisable to reinforce the 12 wire cutting batteries by at least 3 (possibly 4) batteries from Reserve Div. Art. – This would leave 2 or 3 batteries for posting in forward positions.

5. It is suggested to reinforce each Group with one extra wire cutting position. Suitable positions being at F.23.c.5.5.; F.23.d.8.3.; and A.20.d.35.99 (or A.21.a.2.3).

6. Forward batteries would be placed one in OXFORD COPSE, one split up with 2 guns in MARICOURT, one gun F.18.b.4.4. and one gun A.F.17.b.8.3; the third battery being sited in valley running just South of CARNOY.

7. Sites for 4.5” How Batteries are available F.29.a.6.7; A.25.b.2.4., and OXFORD COPSE or behind CARNOY.

8. In addition to above one extra site is required for battery of Right Group, probably in corner of BILLON WOOD about A.20.c.1.4. Arranged.

c/o I.E.F.D.

Mesopotamia

1.6.16

Dear Mr. Murray,

Just a line to let you know that I have heard from your son who is in hospital at Poona, & that he is getting on very well.  I had to send him to hospital at the Front Line & could not get any news of him before, as it is somewhat difficult to get in touch with people up here.  He has done very well indeed out here & I hope to have him again in my Squadron, a very good boy & a sound flyer.  We have been ordered home, but I live in hope of taking what is left of the Squadron out again to some other place after they have had a little leave.

Yours faithfully

F.W. Bowhill

Squad. Com^dr R.N.

SECRET

SCHEME FOR ARTILLERY SUPORT.

• ARTILLERY AVAILABLE.

The Artillery available will probably consist of the following:-

(a) 12, 18-pounder batteries of the 18^th Division.

6, 18-pounder batteries of the “Z” Division.

(b) 3, 4.5” Howitzer batteries of the 18^th Division

1, 4.5” Howitzer battery of the “Z” Division.

All batteries consist of 4 guns unless otherwise stated.

A total of 72 18-pounder guns and 16 4.5” Howitzers.

• OBJECTS TO BE ATTAINED BY DIVISIONAL ARTILLERY.

The objects to be attained by the Divisional Artillery will be

(a) Wire Cutting.  The extent of wire to be cut amounts to rather more than 9,000 yards.  On the assumption that the bombardment is to last for five days, 1,800 yards require cutting daily.

It is proposed to allot 15 4-gun 18-pounder batteries = 60 guns for this task.

An expenditure of 8 rounds per yard of wire is taken as the maximum amount required.

The following shows approximately the number of yards per battery, per gun, and amount of ammunition to be fired per gun per day for the purpose.

15 batteries = 120 yards per battery = 30 yards per gun = 240 rounds per gun per day.

(b) Destruction of trenches etc.

This will be undertaken by the heavy howitzers assisted by fire from the 4.5” howitzers, and considerable damage will be caused to the hostile parapets, etc., by the fire of the 18-pounders during the process of wire cutting. The 4.5” howitzers assisted by the 2” Trench Mortars on the hostile front trenches will deal with all known machine gun emplacements and sniper’s posts etc.

(c) Blocking of Communication Trenches.

This will be undertaken by the 4.5” howitzers assisted by enfilade fire from the 18-pounders.

(d) Preventing repair of the damage caused to the hostile trenches and wire entanglements. This will be carried out by the 18-pounders, assisted by machine gun fire.

(e) The shelling of roads and approaches in rear of the enemy’s position. These within range of the Field Artillery will be undertaken by the 18-pounders, those beyond by fire from the Counter Battery Group.

(f) Destruction of Observation Posts.

This will be undertaken towards the end of the bombardment.

(g) Protection of the present line in case of a surprise attack.

(h) To support the assault.

(i) To form an effective barrage of fire across the whole of the new front.

(j) To be able to place an effective barrage on both flanks of the attack should the occasion arise.

• GROUPING OF ARTILLERY.

The Artillery of the 18^th Division, reinforced by six 18-pounder batteries and one 4.5” howitzer battery of the “Z” Division, will be grouped as follows:-

Group   Position of H.Q.      Commander                                  Composition

Right BILLON VALLEY Lt. Col D.G. Blois D.S.O.  3 18-pr Bties 84^th Bde R.F.A.

1 4.5” Bty      “        “      “

1 18-pr Bty 85^th Bde R.F.A.

2 18-pr Bties “Z” Division

Total       7  batteries

Centre BILLON WOOD     Lt. Col Seagram        3 18-pr Bties 83^rd Bde R.F.A.

1 4.5” Bty      83^rd Bde R.F.A.

1 18-pr Bty   85^th Bde R.F.A.          2 18-pr Bties   ”Z” Division

Total       7 batteries

Left BILLON FARM       Lt. Col A. Thorp          3 18-pr Bties  82^nd Bde R.F.A.

1 4.5” Bty 82^nd Bde R.F.A.

2 18-pr Bties ”Z” Division

1 18-pr Bty 85^th Bde R.F.A.

1 4.5” Bty ”Z” Division.

Total       8 batteries

This grouping of the Divisional Artillery and the positions selected for the Hd. Qrs. Of each group have been arranged with a view to simplifying the communications between the Artillery and the Infantry, and thus ensuring that, as far as may be possible, close touch is maintained between the two arms throughout the operation. The Artillery Group Commander thus becomes the LIAISON Officer at each Infantry Brigade Headquarters, as long as the latter remains in its present position.

The Right Group will be affiliated to the 55^th Infantry Bde.

The Centre Group will be affiliated to the 53^rd Infantry Bde.

The Left Group will be affiliated to the 54^th Infantry Bde.

The zones allotted to the three Artillery groups are practically the same as the fronts told off to the Infantry Brigade to which they are affiliated.

• FORWARD GUNS.

One 18-pounder battery of each group and one 4.5” battery attached to the Centre Group will be sited within 1,600 yards of the hostile front trenches. These guns and howitzers will be available to open fire shortly before the attack, and will form the framework of the barrage of fire in front of the furthest objective.  The range to this front being about 3,500 yards.  In addition, the remaining guns of the Division will be capable of supporting from their present positions the new front at a range of about 5,000 yards.  It should not be necessary, therefore, to have to move batteries forward during, or shortly after, the attack.

• OBSERVATION STATIONS.

These have been prepared along PERONNE AVENUE, in vicinity  ”U” Works, on Hill 124, and in square F.17.d.

These observation posts have been made as strong as possible, and provided with deep dugouts.

In addition to these each battery employed to cut wire will be provided with a post in the front system of trenches.

These will be duplicated in all cases and wherever possible triplicated. Those from Group H.Q. to batteries and from batteries to observing stations will be either placed dug in two feet below the bottom of communication trenches or else buried in separate trenches 6 feet deep.

Arrangements will be made for visual signalling from selected points in German lines to the Observation Stations.

• LIAISON OFFICERS.

An Artillery officer will be told off for this duty to each battalion taking part in the attack. Similarly, an officer from each Group will be detailed to act as Liaison Officer at Infantry Brigade H.Q. in the event of this H.Q. moving forward beyond present sites selected.

Each battery position will be capable of accommodating 1,500 rounds in the case of 18-pounders, and 1.250 rounds in the case of the 4.5” Howitzers. This amount should be sufficient for operations extending over 5 days.

Under instructions received up to the present, all battery vehicles will be kept full, 1,000 rounds per gun will be dumped at or near the guns, and a further reserve of 250 rounds per gun will be dumped in a Divisional Reserve in the BOIS DES TAILLES.

• TRENCH MORTARS.

Positions are at present being prepared for 4 7 6 Batteries of Medium Trench Mortars distributed along the front of attack.  These mortars will be employed in destruction of wire and first line trenches.

Positions have been selected for four Heavy Trench Mortars. These positions are so sited as to cover the whole front of attack to a depth of from three to five hundred yards at their maximum range.  Junctions of trenches and dug-outs in rear of front line will be dealt with by these mortars.

• Definite tasks will be allotted to all Heavy and Medium Trench Mortars, and time-table of tasks issued to all Trench Mortar Batteries.
• In order to minimise the chance of trench mortars being located by the enemy, it is proposed to keep these batteries silent during the first day of the bombardment.
• Up to the hour of assault all Medium and Heavy Trench Mortar Batteries will be supervised and controlled by the Divisional Trench Mortar Officer, who will be in CARNOY for this purpose and in telephone communication with Divisional Artillery H.Q.
• After the assault, certain Medium Trench Mortar Batteries will be controlled by Infantry Brigades, and used for forward work.

• FIVE DAYS PRELIMINARY BOMBARDMANT.

During the five days previous to the Assault, the Divisional Artillery will be engaged on the following tasks:-

• WIRE CUTTING.

It is proposed in the first place to engage the wire on the front trench (and support trench when the latter is close) with Medium Trench Mortars, and to complete the work on any portion of uncut wire with 18-pounders.

For details of wire cutting by 18-pounders, see Appendix A.

(b) DESTRUCTION OF TRENCHES.

Heavy and Medium Trench Mortars will be employed for this task on the front system of trenches, assisted by the 4.5” Howitzer Batteries, who will also engage points further in rear.

(c) PREVENTING REPAIR OF WIRE AND TRENCHES AT NIGHT.

18-pounders and 4.5” howitzers will be responsible for definite fronts, and subject the portions of the enemy’s trenches which have been previously destroyed to irregular bursts of fire throughout the night.

The Divisional Artillery will be assisted by machine guns in this task.

(d) SHELLING OF APPROACHES.

All approaches within range of Divisional Artillery will be subjected to barrages at irregular intervals.

(e) DEFENSIVE BARRAGE.

Definite defensive barrages will be allotted to 18-pounder batteries, in such a manner as to be able to establish a heavy barrage in the event of any German attack or minor enterprise.

• PROGRAMME OF PRELIMINARY BOMBARDMENT.

The following is the proposed programme for five days preliminary bombardment.

1^st Day.  18-pounder wire cutting in accordance with Appendix A.  4.5” howitzers.

“U”         communication trenches, trench junctions, strong points, approaches etc.  Heavy and Medium Trench Mortars remain silent to avoid detection.

2^nd Day.  18-pounder wire cutting in accordance with Appendix A.

“V”          Approaches and communications.

4.5” howitzers, same as first day.

Medium Trench Mortars, wire on front trench.

Heavy Trench Mortars remain silent.

3^rd Day.  18-pounders, wire cutting in accordance with Appendix A.

“W”          Approaches and communications.

4.5” howitzers same as before.

Medium Trench Mortars, wire cutting on front & support trenches.

Heavy Trench Mortars, special points allotted to them.

4^th Day.  18-pounder, wire cutting on front & support trenches to complete work ”X” carried out by Medium Trench Mortars.

Approaches.

4.5” howitzers, as before.

Medium Trench Mortars, destruction of trenches and machine gun emplacements.

Heavy Trench Mortars, same as 3^rd day.

5^th Day.  18-pounder, wire cutting on any portions of wire left uncut.  All approaches.

”Y”            4.5” howitzers, as before.

Medium Trench Mortars, same as fourth day.

Heavy Trench Mortars, same as 4^th day.

A definite daily time table will be worked out in conjunction with XIII Corps H.A. to ensure batteries not interfering with each other in the execution of these various tasks.

• SUPPORT OF INFANTRY SUPPORT

The five wire cutting batteries from each Group will have a strip of German defences allotted to each battery, and will be responsible for engaging all German trenches within this strip in accordance with the time table of lifts.

These strips will be exactly similar to those allotted to batteries during wire cutting, consequently, all registrations arrived at during wire cutting will form part of the general registration for support of the assault.

The Divisional Artillery lifts will be so timed as to be clear of assaulted trenches one minute previous to stipulated time for the Infantry to reach the trench in question. The lifts of the Divisional Artillery are shown in attached map, marked “B”.  During the last minute previous to each lift, H.E. ammunition (5 rounds HE per gun?????) will be used exclusively by 18-pounders, it is hoped that this may act as an indication to the assaulting troops that a lift is impending.

The fire of the forward batteries situated in the CARNOY valley will, in the initial stages, be kept as a reserve to deal with any unforeseen contingencies, and to deal with special portions of the line.

Any small intermediate lifts other than the Divisional lifts will be arranged direct between Infantry Brigade Commanders and Officers Commanding their respective Groups.

• Barrages to ensure Consolidation of Positions Gained.

It will at any moment during the assault be possible to establish an effective barrage, to check counter attacks and assist in consolidation of ground.

The five batteries per Group with strips of front allotted to them will be responsible for establishing a barrage at any point along their respective strips as required. In addition, the forward batteries in the CARNOY Valley will be in a position to form the backbone of any barrage required at longer ranges, such as for instance in the vicinity of CATERPILLAR WOOD should the final objective be obtained.

• PREPARATION FOR FORWARD MOVE.

Two batteries from each Group will be detailed to hold themselves in readiness to move forward to reinforce batteries in CARNOY Valley should occasion arise.  The possible positions for these batteries are being selected, roads to them reconnoitered and necessary bridges erected.

As far as is possible, positions further in advance, on the POMMIERS RIDGE, will be selected and roads of advance to them reconnoitered with a view to their possible occupation at a later stage in the operation.

Appendix B

SECRET

PRELIMINARY INSTRUCTIONS AS REGARDS ARTILLERY SUPPORT DURING ASSAULT.

1. The Infantry Assault will be supported by a systematic bombardment of German defences by Corps Artillery and Divisional Artillery.
2. A definite prearranged plan is being drawn up for the time table of the bombardment and will be issued later.
3. In order to regulate the bombardment with regard to the rate of the Infantry advance, and to co-ordinate the attack throughout the various Divisions engaged, a series of Artillery lifts have been laid down with definite times assigned to them.
4. These lifts are shown on attached sketch by different coloured lines. The times shown at left extremities of these lines refer to the Divisional Artillery, those at the right extremities to Corps Artillery. These lines indicate that at the times stipulated, no gun of the Divisional or Corps Artillery will be firing on any ground situated south of these lines.
5. The lines have been lettered A, B, C, etc., and will be referred to within the Divisional Artillery by these letters.
6. The southern edge of the barrage of fire is thus definitely established at specified times. Further instructions will be issued later as to the depth of German defences to be engaged in rear of these lines, the distribution of batteries, rate of fire etc.
7. Special fronts have been allotted to five batteries per Group for wire cutting together with a strip of German defences for which they are responsible. The boundaries of these strips are shown in attached diagram.The 4.5” Howitzers will engage trenches somewhat in rear of front barrage from which fire might be brought to bear on our assaulting troops.
8. The remaining batteries from each Group will be employed in dealing with any unforeseen contingencies.
9. Each of these batteries will be responsible for engaging defence within the strip allotted to it as the barrage moves forward.
10. During the bombardment, 18-pounder batteries will fire Shrapnel with a mixture of 20% H.E. As an indication to the Infantry that a lift is about to occur, for 50 seconds previous to each lift, all 18-pounders will fire exclusively High Explosive ammunition, namely about 5 rounds per gun.
11. Throughout the advance Group Commanders will hold themselves in readiness for the possibility of having to establish a flank barrage to protect any salient that may be formed owing to some portion of the advance being checked.On the left flank the forward section of guns situated in F.17.b. will similarly be detailed for the protection of the left flank and is well sited for this purpose.
12. This precaution is of special importance on the right in the vicinity of MONTAUBAN, the protection of this flank will consequently be allotted to the forward battery situated in OXFORD COPSE.
13. In the event of the assault being checked, or of a German counter-attack being launched, it will be possible at any moment to establish an effective barrage on any stipulated line.On a basis of 15 batteries of 18-pounders available to establish such a barrage, the front should be covered by one 18-pounder to every 50 to 25 yards.
14. Thus, for instance, should it be necessary to check a counter-attack whilst holding the POMMIERS Trench, the order would be passed to establish a barrage along ”Line D”. The barrage front of each battery being represented by the width of the strip allotted to it at that point.
15. After arrival on the line POMMIERS Redoubt – POMMIERS Trench namely along lines E and D, the advance will be delayed for approximately two one hours during which time the Infantry will consolidate the line. This period will be employed by the Divisional Artillery in searching the ground to be covered in the further advance; and in dealing with any hostile preparation for a counter-attack. R.F.C. contact patrols and the Kite Balloon will be requested to furnish all possible information as regards hostile movements north of the POMMIERS Redoubt – MONTAUBAN Ridge. The further advance of the Infantry will be preceded by a barrage of 18-pounder fire starting from line ‘F’ at 2-10 and moving forward by increments of range of about 100 yards until line ’H’ is reached.
16. Under cover of this curtain of fire the Infantry will advance to establish themselves on the line shown in attached sketch.
17. During the final stage whilst the Infantry are consolidating their objective, the role of the Artillery will be all important. Every possible endeavour will have to be made to obtain forward observation and to establish communications, such that the Artillery barrage can be controlled from the new line.
18. The above instructions are to be regarded as a general guide, and are only intended to assist Group Commanders in making necessary preparations and carrying out required registration.
19. Full orders as regards lifts, barrages, etc. will be issued later.