12 Div Instructions 14 July 1917

Stamp H.Q. 4th Div. Artillery.
R.A. 213/3

12th Divisional Preliminary Instructions for
Artillery co-operation in re-taking LONG.TRENCH.

Ref.- MONCHY Trench Map

1. The Infantry’s objective is LONG TRENCH, linking up the North end of it at 0.2.d.70.30. to HOOK TRENCH at its junction with INFANTRY LANE.

2. The 37th Infantry Brigade will attack on the Right.
The 35th Infantry Brigade will attack on the Left.

3. The attack will be preceded by a 3 minutes hurricane bombardment by Stokes’ Mortars, 4.5 inch howitzers and 18 prs on the objective.
At Zero plus 3 minutes this barrage will lift and form a box barrage as per Task Table attached.

4. The 4th and 50th Divisional Artilleries, VII and XVII Corps Heavy Artillery will be co-operating, firing on the tasks shewn in Task Table attached.

5. The operation will take place early on the morning of 15th July.

6. Rates of fire –
Zero to Zero plus 10 mins. 18 prs 4 rounds P.G.P.M.
4.5” Hows 3 .. ..
Zero plus 10 mins to Zero 18 prs 3 .. ..
plus 20 mins. 4.5” Hows 2 .. ..
Zero plus 20 mins to Zero 18prs 2 .. ..
plus 30 mins 4.5” Hows 1 .. ..
Zero plus 30 minutes onwards under Group control.

C.A. Cloves, Major,
Brigade Major, 12th D.A.
14th July, 1917.
Copies to –
62nd Bde. R.F.A.
63rd Bde. R.F.A.
48th Bde. A.F.A. Bde.
12th Divn (G).
R.A., XVII Corps.
H.A., XVII Corps.
4th D.A. H.A., VII Corps.
50th D.A. War Diary & File.

12th Divisional Artillery Order No. 52. 14 July 1917

SECRET. Copy No. 21.

12th Divisional Artillery Order No. 52.

Ref. – MONCHY Trench Map,
14th July, 1917.

In continuance of Preliminary Instructions (R.A. 213/3) issued to-day –

1. The attack on LONG TRENCH will take place on the morning of July 15th. ZERO HOUR will be 5 a.m.

2. Artillery and Trench Mortar Barrages will be as laid down in R.A. 213/3, with the exception of the following amendments –
(a) In Task Table, Sheet 3 (Stokes’ Mortars), Column “Task Zero plus 3 minutes onwards”. Line 2,
For “No change”, substitute “O.2.b.5.0. to O.2.d.8.8.”

(b) In Task Table, Sheet 1, 18 pr batteries 48th Brigade,
Tasks of the third 18 pr battery should read –
“Zero to Zero plus 3 mins.”
“MOUND (O.2.d.95.55.) to O.2.d.8.9. (3 guns)
Trench O.2.d.70.52. to O.3.c.00.44. (3 guns)
“Zero plus 3mins onwards –
“MOUND (O.2.d.95.55.) to O.2.d.8.9.

3. A General Staff Officer from Divisional Headquarters will be at H.Q. 37th Infantry Brigade (N.10.d.5.7.) at 6 p.m. on July 14th to synchronise watches.
An officer from each R.F.A. Brigade and Trench Mortar Battery of the 12th D.A. will attend at that hour to take the time.
Watches will be synchronised from 12th D.A., H.Q. with VII and XVII Corps H.A., and with 4th and 50th D.A. at 7.30 p.m. and 11 p.m. July 14th.

4. Liaison Officers with Infantry Brigades will be provided as follows –
(a) With Right (37th) Inf. Bde. Right Group Arty.
(b) With Left (35th)Inf. Bde. Left Group Arty.

5. A flight of our Battle planes will fly over our lines prior to the operation to prevent hostile aeroplanes carrying out observation.

6. RED flares will be lit in the most forward positions captured at 6 a.m. on ZERO Day, at which hour a contact patrol will be in the air.

C.A. Clowes, Major,
Brigade Major, 12th D.A.
Copies to –
62nd Bde. R.F.A. (5)
63rd Bde. R.F.A. (5)
48th Bde R.F.A. (5)
D.T.M.O. R.A., XVII Corps.
12th Divn. (G) (4) H.A., VII Corps.
4th D.A. (2) H.A., XVII Corps.
50th D.A. (2) War Diary & File.

23rd A.A.A. Bde.
Please acknowledge to this H.Q. by wire.
C.C.S. Owen Major R.A.
B.M. 4th D.A.

4 Div Artillery message 14 July 1917

“A” Form

To 23rd A.F.A. Bde

Senders Number Day of Month In reply to Number AAA
BM 103 14

Ref attached please arrange to support 12th Div as shown.

From 4th Div Arty
Time 10.30 am

C.C.S. C*** Major
B.M. 4th Div.

“A” Form

To Use

Senders Number Day of Month In reply to Number AAA
BM 106 14th

4th Div Arty No 439/7 dated today is postponed until further orders.

Place Such

4th Div. Artillery 14 July 1917

Stamp H.Q. 4th Div. Artillery
4th Div. G.S. 24/11

10th Brigade.
11th Brigade.
12th Brigade.
C.R.A. 4th Div.

With a view to testing S.O.S. communication by Light Signal, 10th, 11th, and 12th Inf. Brigs. will please arrange to fire one GREEN Rocket or Very Light at following times on evening 14th instant:-
10th Inf. Brig. front – 10 p.m.
(Left Battalion) 11th Inf. Brig. battn – 10.30 p.m.
12th Inf. Brig. front – 10.45 p.m.

W. Kirker
General Staff, 4th Division.
13th July, 1917.

Copy to 4th Div. Q.

23rd Bde. R.F.A.
29th Bde. R.F.A.
32nd Bde. R.F.A.

1. Ref. Min. 1. Each Brigade will fire 1 round per Battery on S.O.S. Lines when the signal goes up on the Battalion Front covered by that Brigade.
2. Watches will be synchronised at 7.30 pm to-day.
3. Times lights are observed and firing of guns will be carefully noted and reported to this H.Q.

C.S. Jones, Major R.A.
Bde. Major 4th Divisional Arty.

Brigade Major R.A., 12th Division. 13th July, 1917.

Stamp Headquarters 12th Divisional Artillery R.A. 213/2

62nd Brigade R.F.A.
63rd Brigade R.F.A.
48th A.F.A. Brigade
12th Division (G) )
4th Divl. Arty. ) For information
50th Divl. Arty. )

Reference paragraph 5 of R.A. 213/1 dated 12th July, 1917.

In addition to the fire of the Heavy Artillery in case of threatened attack on HOOK TRENCH, the following supporting fire has been arranged with flank Divisional Artilleries –

On receipt of Code Call – “ASSIST MARBLE” from 12th D.A. H.Q.

4th D.A. Will barrage from the East edge of BOIS des AUBEPINES to the West corner of BOIS du SART.

50th D.A. Will barrage STIRRUP LANE from O.8.d.7.4. to O.9 central.

C.A. Clowes
Brigade Major R.A., 12th Division. 13th July, 1917.

23rd A.F.A. Bde.

Will you please arrange for task shown for 4th D.A. to be carried out when called for if the situation on your *** front permits

C.C.S. Owen Major R.A.
B.M. 4th D.A.
*** to be altered:-