Appendix to 21st Divisional Artillery Instruction 21 June 1916

Appendix to 21st Divisional Artillery Instruction 21 June 1916


Day U. V. W. X. Y. REMARKS
Wire Cutting All day All day All day All day All day
Registration – As required As required As required As required On V day heavy guns and howitzers must register.
General Bombardment – – All day All day All day Heavy Howitzers stop on W, X and Y days for a fixed period.
Concentrated Bombardments – – 9 a.m. to 10.20 a.m. 4.30 a.m. to 5.50 a.m. 6 a.m. to 7.20 a.m. In each case smoke will be used for the last 5 to 10 mins of those concentrated bombardments
Counter-Battery All day All day All day All day All day Very Active.
Gas – At night 2 hours. At night 2 hours. At night 2 hours. At night 2 hours. Gas one night only, first time wind permits.
Night firing All night All night All night All night All night

Appendix to XV Corps Heavy Artillery Instruction 21 June 1916

Appendix to XV Corps Heavy Artillery Instruction 21 June 1916

V. W. X. Y. & Z DAYS

Battery Guns Position Rounds Allotted Objectives No of Hours No of Rds. Remarks
French Group 77 mm Guns F.13.c

High Explosive

High Explosive V DAY

On Hostile battery positions, Nos 7, 90, 93, 79, 80, 42, 16, 26, 74, 100, 97, 37, 102, 101.
10, 106, 35, 75, 78, 108, 27, 92, 87, 36, 30, 34, 33, 88, 84, 111, 82, 72, 75, 104, 98, 11, 77, 21, 91, 93, 22, 105.

Heavy bursts of fire at intervals on MAMETZ and FRICOURT, and occasionally on the battery positions in BOTTOM WOOD and MAMETZ WOOD, and searching FRICOURT WOOD, but avoiding the front trenches.

3.30 a.m. to 8.30 p.m.

8.30 p.m. to 3.30 a.m.

Continuous steady fire

As per map

Not on the front trenches as parties go out for observation.

21st Divisional Artillery Instruction 21 June 1916

21st Divisional Artillery Instruction 21 June 1916

V. W. X. & Y DAYS
Battery Guns Position Rounds Allotted Objective No of hours No of Rds Remarks
D/78 R.F.A




do 4.5” Hows




do W.25.b.33




do 250 rds per gun per day

75 rds per gun. Special Shell

75 rds per Gun. Special Shell
100 rds per Gun. Special Shell
85 rds per Gun H.E. Hostile battery positions


Search the VALLEY from X.29.b.56 to X.30.a.38
STRIP of MAMETZ Wood in Squares X.23.b and down the valley to X.29.a.34.96.
MAMETZ WOOD in Squares X.18.c. X.24.a. X.24.c.

MAMEZT WOOD in Squares X.18.c. X.24.a. X.24.c.

MAMETZ Wood in Squares X.18.c. X.24.a. X.24c.
do do & BAZENTIN LE GRAND WOOD To be kept under fire throughout each day.

-65 mins to -30 mins

-30 mins to 00

00 to 1.30

1.30 to 2.25

2.55 on








At a slow rate until further orders

Appendix to XV Corps Heavy Artillery Instruction 21 June 1916

Appendix to XV Corps Heavy Artillery Instruction 21 June 1916


Battery Guns Position Rounds Allotted Objectives No of Hours No of Rds. Remarks
French Group 77 mm Guns F.13.c Gas Shell



Gas or H.E.
QUADRANGLE TRENCH in Square X.23.c., WOOD TRENCH, STRIP TRENCH, BOTTOM WOOD, RAILWAY ALLEY in Square X.29.c. and the Valley running N & S in Square X23.b. & d. and X.29.b.

MAMETZ WOOD SX.18.c., X.24.a. & c.


-65 mins to
-35 mins

-30 mins to 00. 00 to 2.55

2.55 on
Rapid rate of fire


Quick rate of fire.

Slow rate of fire.

All fire must be lifted beyond the green line at -30 mins. Of zero.

XV Corps Artillery Instruction 21 June 1916

XV Corps Artillery Instruction 21 June 1916

15 CA 10/23/1
Copy No 7

With reference to instructions for a preliminary bombardment by the XV CORPS 15/CA 10/23 dated 12-6-16; the following amendments will be made:-
Delete Paragraph 1 and substitute:-
1. The preliminary bombardment will be carried out on U, V, W, X and Y days. Wire will be cut on all 5 days.
On V day all heavy guns and howitzers will register all day.
On W, X, and Y days and during the nights U/V to Y/Z inclusive a continuous bombardment will be carried out.
On W, X, and Y days there will be one concentrated bombardment. During the last 5 or 10 minutes of these concentrated bombardments smoke will be discharged.
Gas will be discharged on the first night that the wind is favourable.
240 mm Trench Mortars may be used as required from W day onwards.
2” Trench Mortars for wire-cutting on U and V days and as required afterwards.
60 prs for wire-cutting and registration on V day and as required afterwards. 3” Stokes Mortars as required on W day and onwards.

2. Paragraph 6 delete –
lines 4,5,6,7,8,9,10 and substitute –
Bombardment W and Y days – Tracing B.
“ X day – “ A.
Concentrated bombardments W and Y days – Tracing C.
“ X day – “ D.

3. Paragraph 9 – Attached new Appendix II to be substituted for Appendix II in line 3.

4. Add following new paragraphs (11& 12):-

11. On V day all heavy howitzers and guns will register the zones they are to fire on very thoroughly.
All guns of batteries should register in each zone.
As a rule registration should not be considered complete until a direct hit has been made on the target engaged.
The Divisional Artilleries can register as they require.
12. As there are only 3 days preliminary bombardment and 3 concentrated bombardments, the amount of ammunition can be increased on W, X and Y days, but care must still be exercised not to exceed the limit of work that can reasonably be expected from detachments.

J.M.R. Harrison Major
for Brigadier General R.A., XV Corps

Copy No 1 to XV Corps
“ 2 to XV Corps H.A.
“ 3 to 7th Division.
“ 4 to 7th Divisional Artillery.
“ 5 to 17th Division.
“ 6 to 21st Division
“ 7 to 21st Divisional Artillery.
“ 8 to Fourth Army.
“ 9 to War Diary.
“ 10 to File
“ 11 to 14 Spare.

XV Corps Heavy Artillery Instruction 21 June 1916

XV Corps Heavy Artillery Instruction 21 June 1916

B.G.R.A. 21st Division.

M. le Comdt. Le 6e Groupe de 75.
XV Corps H.A.
Operation Order No 7.

1. The XVth Corps are taking part in an offensive operation which is being carried out by the 4th Army in conjunction with other Armies.

2. The objectives of the Corps are as follows:-
(1) A line running along the spur in S.25.b., X.30.a., and the line of the spur running South from CONTALMAISON to BOTTOM WOOD.
(2) BAZENTIN LE GRAND and the defences between that village and MONTAUBAN.

3. The assault of the enemy positions will be preceded by a bombardment lasting four days designated V. W. X. & Y. days, the day of attack being Z day.

4. The time of assault on Z day will be zero hour, which will be notified; this will be preceded by an intense bombardment lasting 65 minutes.

5. The Corps Artillery under the orders of the Heavy Artillery Commander during the period of bombardment, and at the commencement of the further operations, will consist of:-
2 12” Howitzers.
4 9.2” How. Batteries.
4 8” How. Batteries.
2 6” How. Batteries. 30 cwt.
2 6” How. Batteries. 26 cwt.
4 6” Mk. VII Guns.
5 60 Pdr. Batteries.
3 4.7” Batteries.
1 4.5” Battery.
assisted by 3 75 mm Batteries of the French Army.
Time tables in which definite tasks have been allotted to every battery have been issued as follows:-
x x x
Special Schedule for 75 mm Battery Group.

6. It is of the utmost importance that the counter battery work should be carried on during the preliminary bombardment and also particularly during the assault.
It is of little avail destroying the enemy trenches and defences if he is still able to put up such a heavy barrage on our front line, that our troops cannot advance.

7. Certain batteries are therefore told off to keep all known battery positions under constant fire during the whole of this period, and the Group of French Batteries has been detailed to assist in this.

8. Other batteries are available and at the disposal of the Aeroplanes to engage any new battery positions that may be disclosed.

9. A map of all known battery positions has been issued.

10. In addition to the day work on the hostile battery positions on V, W, & X days, the French Group will please assist with bursts of fire at night at varying intervals on MAMETZ and FRICOURT, but the front trenches at FRICOURT must be avoided on account of observation parties going out at night.
Occasional bursts of fire will also be directed against the battery positions to prevent the hostile guns being moved.

11. On Z day gas shell will be used by the French Batteries during the period of the preliminary bombardment and afterwards, but no gas shell must at any time be directed W. of a N. & S. line passing between Squares X.22.28 and Squares X.23.29., and after 30 mins. before zero none must be directed on this side of the green line on the map.

On this day care must be exercised that no fire of any kind is directed outside the area comprised between the yellow lines on the map.

12. On Z day during the advance, flares will be lit by the infantry at specified hours as follows:-
9 a.m. 1 p.m. 5 p.m. 9 p.m.
They will also be lit when they reach the 1st objective.

13. Ammunition can only be replenished at night and the route to be followed by the lorries will be notified.

14. Reports will be forwarded frequently to H.A. Hd. Qrs.
15. Headquarters of the Heavy Artillery will remain at their present position until further orders.

William Napier
Brig. General, R.A.
Comdg. H.A. XV Corps.

Copies to S.O.R.A. XV Corps – 1
B.G.R.A. 7th Div – 1
“ 21st “ 1
“ 17th “ 1
No 3 Squadron R.F.C. 1
File – 1

21st Divisional Artillery Instruction 21 June 1916

21st Divisional Artillery Instruction 21 June 1916

21 Div
Divl. Comdr.
G.S.O. (1)
G.S.O. (2)
G.S.O. (3)
Div Art.
Div. Eng.
A.A. & Q.M.G.
D.A.A. & Q.M.G.
C. Comdt.

On U day, the following telephone lines will be disconnected from the Divisional Exchanges:-
French Mission (RIBEMONT)
C.R.A’s Mess.

During operations “G” and Artillery calls will be treated as priority calls. Exchange operators will be instructed to cut off any other connection, if necessary, to put through a “priority” connection, on speaking the word “priority”

A.T. Paley
General Staff,
21st Division.

21st Divisional Artillery Instruction 21 June 1916

21st Divisional Artillery Instruction 21 June 1916

Copy of XV Corps No 38/3 dated 20.6.16. SECRET.

Reference XV Corps letter No. 38/3 of the 25th May, 1916.
The following points are brought to
1. The value of new identifications or of any other intelligence received during active operations depends almost entirely on the speed with which the news is transmitted.

2. Documents. Special men will be detailed to collect all documents found in enemy trenches, dug-outs, or company and regimental headquarters or in captured villages. Two men per Battalion would be a suitable number. These men will be supplied with maps showing as far as possible the position of all enemy headquarters. Two men per Battalion also will be told off for the collecting of documents from the dead.
These men will wear a yellow brassard so that they can be generally recognised as acting on special duty.
These men must be supplied with sandbags in which to place any papers collected. A notice stating where the papers were found will be placed at the top of each bag.
All documents must be sent as soon as possible to the Corps Cage via the Divisional Cages. The arrival of documents at Divisional Cage should be notified to the Intelligence Officers who may be there.

Attention is called to the following


4. Identifications. Each Brigade Headquarters in front line will report by the quickest means available the first identifications made, afterwards, only new identifications made will be reported by signal.
5. Deserters. It is likely that deserters may come over to our lines during the bombardment and every encouragement should be given them to do so. It is of great importance that unwounded prisoners should be obtained previous to Z day.
6. Civilians. During the first phase of operations probably no civilians will be met with. During the later phases any civilians met with are to be evacuated to ALBERT under instructions which are being issued by the A.P.M. XV Corps. They will there be handed over to the French Authorities.

7. Prisoners. Impending arrival, and actual arrival of prisoners at Divisional Cages is to be immediately notified to Intelligence, XV Corps Headquarters.


62 Inf Bde. )
63 “ “ )
64 “ “ )
50 “ “ ) for information.
Div. Art. )
Div. Eng. )
Capt. Franklin. )
Lieut Mitchell. )
1) Forwarded for information and action where necessary.
2) Maps showing certain known Hqs, will be sent to you (Bdes) as soon as possible.

A. Hollingworth,
General Staff.
21st Division

21st Divisional Artillery Instruction 21 June 1916

21st Divisional Artillery Instruction 21 June 1916


Copy of Fourth Army No I.G. 144/16 dated 17-6-16

A blind shell picked up recently near NAB, E. of AUTHUILLE has been examined by the chemical expert who pronounces it to be a “K” shell.

The contents are slightly lachrymatory and highly poisonous.

Our gas masks are, however, proof against it.

This shell was fired from a 15 cm Howitzer.

These shells are heavier than H.E. shells of the same calibre. It is therefore possible that the enemy may be registering with these shells with a view to their employment in the future.

The shell is painted grey with a large K in yellow on it. a careful look-out is to be kept for similar blind shells, and a report forwarded at once through A.H.Q. giving the exact locality as to where they fall.

9th F.A. Brigade
7th -“-

For information and action.

Captain, R.F.A.,
Brigade-Major, 21st Divn. Artillery

21st Divisional Artillery Instruction 21 June 1916

21st Divisional Artillery Instruction 21 June 1916

21 Div.

XV Corps 1 “Q” 3
62Inf. Bde. 5 A.D.M.S. 1
63 : : 5 A.P.M. 1
64 : : 5 C. Comdt. 1
Div. Art. 2 D.A.D.O.S. 1
Div. Eng. 4 7th Div. 1
Pioneers 1 17th Div. 1
Signals 1 34th Div. 1
178 Tun. Co. R.E. 1 50th Inf. Bde. 1

Reference 21 Div. O.O. 55 dated 17/6/16.

Page 6.
Para 13 (a). – Erase last sentence and add:-

“Stragglers will be sent back to the 1st Line Transport of their Brigade. here they will be given a meal and then formed up in squads and put through some exercises in arm drill and drill movements in very quick time.
Each Brigade will detail at least 2 particularly smart and strict N.C.O’s for drilling stragglers.
When the above has been completed, parties will be made up and marched to QUEEN’S REDOUBT under one of the spare Officers left behind by Battalions.
On arrival at QUEEN’S REDOUBT, the party will report to Captain Franklin, Divl. Grenadier Officer.
If not required by Captain Franklin for carrying purposes, the party will march to the H.Q. of their Brigade, whence the men will be passed on to their own units.”

Appendix D (iii) add:-
Para 6. Four new dugouts which are in line with the dugout allotted to 62nd Inf. Bde. as Advanced H.Q., will be available for Trench Mortar Batteries of 50th,62nd, 63rd, 64th Bdes.
52nd T.M. Batt. will continue to use the dugout now occupied by them.
62nd Bde. will allot the dugouts referred to above, care being taken not to take possession of any of the Medical dugouts.

Please acknowledge.

A.T. Paley
General Staff,
21st Division.