12. _Communication._――A party of signallers will accompany the second wave and lay a telephone line from the jumping-off place to the Green line, afterwards extending it to Brown and Blue lines. Battalion Headquarters will not move from the jumping-off place until the Green line has been captured. 13. _Watches_ will be synchronised at 7 P.M. on Y day and at 9 A.M. on Z day. 14. _Prisoners._――If prisoners are taken they must be sent out of the way, to prevent blockage in the trenches. The Corps Cage is at the Crater A.8.a. In future correspondence will _not_ be taken off prisoners except off officers. Officers’ documents will be removed as soon as they are captured, and sent to the Corps Cage with their escort. 15. _Dumps._――An advanced Brigade Dump is at T.8.c central. 16. The Brigade on our right will open enfilade machine-gun and mortar fire on the Green line from about T.9.d.3.9 at zero, and continue until the creeping barrage has passed Green line. 17. Z day and zero will be notified later, but zero will probably be in the afternoon. 18. _Miscellaneous._――(_a_) Assaulting troops should keep as close behind our creeping barrage as possible. (_b_) There will be no intense artillery fire before zero. (_c_) All troops should watch for any messages which aeroplanes may drop. W. R. BAILEY, Capt. and Adjt., 2nd Batt. Grenadier Guards. [Sidenote: Sept. 25.] The following officers of the 2nd Battalion took part in the attack on the 25th: Lieut.-Colonel C. R. C. de Crespigny, D.S.O. Commanding Officer. Capt. the Hon. W. R. Bailey Adjutant. Lieut. M. A. Knatchbull-Hugessen Lewis Gun Officer. Lieut. A. F. Irvine No. 1 Company. 2nd Lieut. G. A. Arbuthnot ” ” Capt. A. K. S. Cunninghame No. 2 Company. Lieut. H. G. Wiggins ” ” 2nd Lieut. F. H. G. Layland-Barratt ” ” Capt. W. H. Beaumont-Nesbitt No. 3 Company. Lieut. A. McW. Lawson-Johnston ” ” Capt. G. C. FitzH. Harcourt-Vernon No. 4 Company. Lieutenant the Hon. W. A. D. Parnell ” ” Lieut. R. B. B. Wright ” ” Capt. J. Andrews, R.A.M.C. Medical Officer. The remainder of the officers remained with the transport.