4th DIV. ARTY ORDER NO. 78. 15 July 1917

H.Q.
SECRET
4th DIV. ARTY ORDER NO. 78.

23rd A.F.A. Bde.
29th Bde. R.F.A.
32nd Bde R.F.A.
17th Corps H.A.
4th Div “G”. )
XVII Corps R.A. )
12th Div. Arty. ) For information.
17th Div. Arty. )

Reference PELVES TRENCH MAP corrected to 28/6/1917:-

The following Programme of Artillery Activity on 4th Division Front will be carried out for Week Ending July 21st 1917.

(1) Night 15th/16th July. To cover a patrol enterprise.
From Zero – 2 mins to Zero +2 mins.
29th Bde 4 18 pdrs 2 4.5 How’s will fire on line I.26.a.40.70. – I.26.a.20.40.
32nd Bde 12 “ “ 5 “ “ “ “ “ “ I.26.a.20.40. I.25.d.75.60.
Rate of fire 18 pdrs 3 rds per gun per minute 50% H.E. & Shrapnel
“ “ “ 4.5 How’s 2 “ “ “ “ “

(2) Night 16th/17th July.
Bursts of fire for 1 minute on following areas at 11-8 pm 11-15pm 11-20pm 11-40pm 11-50pm & 11-5pm 12.5am.
23rd Bde. 6 18 pdrs 2 4.5 Hows Paths at sides of Canal from I.20.d.95.70. to I.21.c.95.50.
29th Bde. 12 “ “ 6 “ “ Area I.21.b.70.40. – I.15.d.70.00. –
I.15.d.00.00. – I.21.b.00.40.
79th Bde. 12 “ “ 4 “ “ Area I.21.b.00.20 – I.21.b.00.60. –
I.21.a.60.60. – I.21.a.60.20.
32nd Bde 10 “ “ 3 “ “ Road from I.20.d.90.00. to I.21.b.45.45.
Rates of fire & ) 18 pdrs 4 rds per gun per minute Shrapnel
Ammunition ) 4.5 Hows 3 “ “ “ “ “ H.E 106 Fuze.

(3) July 19th 7 am – 7-13 am
LETHAL GAS SHELL BOMBARDMENT.
D/23 5 guns)
D/48 4 “ ) HOUSES
128th 6 “ ) & enclosures in area I.27.a.75.55. – I.21.c.40.15. –
86th 5 “ ) I.21.c.00.15. – I.26.a.85.90. – I.27.a.45.25.
D/79 4 “ )
Rate of fire 3 rds per gun per minute.

18 pdrs.
29th Bde 4 guns will fire Shrapnel on East side of exits of PELVES.
32nd “ 12 “ “ “ “ “ the area bombarded.
23rd “ 4 “ “ “ “ “ Southern exits of PELVES.
23rd “ 6 “ “ “ “ “ Portion of PELVES not bombarded.
Rate of fire 3 rds per gun per minute.

(4) July 20th 1917. DUMMY RAID.
This will be as in 4th Div Arty Operation Order No. 74 d/- 5/7/1917 paras 3 to 5 inclusive.
Zero hour 12-30 am.
(a) 18 pdr barrages will be as follows:-
(1)
Barrage Letter UNIT No. of Guns LINE
(
A. (
B.
C.
D.
E.
F. 23rd A.F.A. Bde
32nd Bde. R.F.A.
23rd A.F.A. Bde.
29th Bde. R.F.A.
23rd A.F.A. Bde
29th Bde. R.F.A.
48th Bde. R.F.A. 12
12
2
2
2
2
12 I.31.b.90.70 to I.25.d.85.00.
I.25.d.85.00. to I.25.d.75.30.
I.32.a.00.50. to I.31.b.90.70.
I.25.d.75.30. to I.25.d.75.50.
I.32.a.00.50. to I.32.a.40.50.
I.25.d.75.50. to I.26.c.15.15.
I.32.a.40.50. to I.26.c.00.50.
(2) At Zero all guns will open fire as in 1.
“Z + 1 min A,B, & C will lift 200 yards East.
“Z + 3 “ A,B,C & F “ “ 200 “ West.
“Z + 5 “ -do – “ “ 200 “ East.
“Z + 6 “ Fire will cease.
(3) Rate of fire, Z to Z +1 min 4 rds per gun per minute.
Z+1 to Z +3 “ 2 “ “ “ “ “
Z+ 3 to Z +6 “ 4 “ “ “ “ “
E & D Barrages will fire 3 rds per gun per minute throughout.
(4) Ammunition. All except E & D Barrages 50% H.E. & Shrapnel
E & D Barrages Shrapnel.

(b) 4.5 Hows.
(1) From Zero to Z+6 mins.
86th Bty. DEVILS TRENCH I.32.a.00.50. to I.32.a.10.20. and short
trench about I.32.a.20.30.
D/48 Bty. GUN TRENCHI.32.a.40.50. to BIT LANE (inclusive).
D/23 Bty. FUZE TRENCH and shell holes about I.26.c.60.30.
128th Bty. SUNKEN ROAD I.26.c.00.50. – I.25.d.70.95. –
I.26.a.10.10. –Shell holes about I.26.a.15.25.
4.5 Hows will search and sweep to cover as much of the objectives shown as possible.
(2) Rate of fire:- 3 rds per gun per minute.
(3) Ammunition:- H.E., 106 Fuze.
(c) 6” Hows.
As many 6” Hows as are available will fire from Zero to Z + 6 as rapidly as possible with 106 Fuzes on GRENADE TRENCH & BIT LANE from GUN TRENCH to PELVES.
(5) Harassing fire will be carried out daily as before, except that no Chemical Shell will be fired. ¾ Ammunition to be fired by night.

(6) Ammunition allotment exclusive of operations in para 1, 2, 3 & 4.

HARASSING FIRE. CALIBRATION ETC.
* 18 pdrs. 4.5 Hows. * 18 pdrs. 4.5 Hows.
23rd Bde. 1400 100 250 75
29th Bde. 1200 150 250 50
32nd Bde. 1200 150 250 75

* 50% H.E. and Shrapnel.
A special allotment of 300 rounds 18-pdr and 200 rounds 4.5” How. Is made to 29th and 32nd Bdes for neutralizing trench mortar fire if required.
(7) ACKNOWLEDGE.

C.C.S. Blower MAJOR R.A.
BRIGADE MAJOR, 4th DIVISIONAL ARTILLERY.
15th July, 1917.

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