1. The attack on LONG TRENCH in which the 23rd ARMY BRIGADE is co-operating will take place at 4.45 am on 17th inst & not 5 a.m.
2. The TEST S.O.S. as laid down in my Sa/28 will take place to-night. The signal will be 1 GREEN LIGHT, & not the S.O.S. signal.
Officers at Brigade O.P. & Liaison will report to this office on seeing the light which will be sent up from INF BRIGADE H.Q. (H.23.b.3.2.)
On completion of test each battery will report time of seeing the light & firing the round.
V.C. Ritchie Lt. R.F.A.
MESSAGES AND SIGNALS
Received 12.17 m
Senders Number Day of Month In reply to Number
BM 116 16
Ref 4th div arty 439/7 dated 14/7/17 the operation therein mentioned will take place tonight at time shown.
Signature of Addressee
Amendment No. 1 to 12th Divisional Artillery Order No. 52.
16th July, 1917.
1. (a) Paragraph 1. For “July 15th”, read “July 17th”.
For “5 a.m.”, read “4.45 a.m.”
(b) Paragraph 3. For “July 14th”, read “July 16th”.
(c) Paragraph 6. For “6 a.m.” read “5.30 a.m.”
2. ACKNOWLEDGE PLEASE.
C.A. Clowes Major,
Brigade Major, 12th Divl. Artillery.
To all recipients of 12th D.A. Order No. 52.
By Special D.R.
23rd Bde. R.F.A.
Forwarded. Please acknowledge by wire to this H.Q.
C.P.S. ***** Major.