Marking boards will be put out on a line 148 degrees magnetic from left flank mark, or 328 degrees magnetic from the right flank mark. Right and left flanks have been marked in advance by 2/I.G. 3. The dividing line between battalions in attack on X and Y lines is as follows: X line. T.8.d.9.4. Y line. Road junction T.3.d.5.2. 4. 2/I.G. will be formed up in two waves. First wave will clear up second German trench in X line. Second wave will clear up first German trench in X line. Both these waves will clear up Y line. Officer commanding 1st Bn. Scots Guards will make arrangements for clearing the part of these two trenches in his area. 5. The creeping barrage will open at zero hour on a line at right angles to the direction of the attack through cross-roads in T.14.a. It will advance and halt thereafter as laid down in Appendix A to this Office No. 129/G. 6. Prisoners will be collected at Battalion Headquarters under Battalion arrangements, and sent back to Divisional Collecting Station, Crater Post, A.8.a.6.3, when possible. They should be made to carry wounded when practicable. (Signed) E. W. M. GRIGG, Captain, Brigade-Major. 14/9/16. The first phase of the attack of the Guards Division was to be carried out with Pereira’s Brigade on the left and Ponsonby’s Brigade on the right, while Corkran’s Brigade would be in reserve. To the 2nd Brigade was allotted a front of 500 yards, north-east of Ginchy, and the attack was to be carried out by the 3rd Battalion Grenadiers on the right with the 1st Battalion Scots Guards in support, and the 1st Battalion Coldstream on the left with the 2nd Battalion Irish Guards in support. In order to evade the heavy barrage which the Germans usually put down along the east of Ginchy and Guillemont villages, it was decided to assemble the whole Brigade east of Ginchy. This precaution had the advantage that the assembly trench was not shelled, but there were certain disadvantages. In the first place, the assembly ground was not square with the line of attack, so that a change of direction was necessary after the attack had started, and, in the second place, it was by no means easy to keep the 2nd Guards Brigade in immediate touch with the 1st Guards Brigade. It had been intended to align the Brigade on painted boards showing the waves and the flanks of the platoons, but these showed up so bright in the clear moonlight that they were thrown away and men were put out as markers instead. [Sidenote: Sept. 15.] The 3rd Battalion Grenadiers was formed up in four waves, all the men being in single rank, and companies in columns of half-companies, with fifty yards’ distance between platoons. Their distribution was as follows: