"I was late in returning from my reconnaissance owing to delay in fixing position for my Brigade Headquarters; did not get the order until eight o'clock, and by that time batteries had started moving ammunition up to the positions. All available guides had gone up with the ammunition waggons. "My batteries will be prepared to fire a barrage by dawn on 27th Sept. "In confirmation of my telephone conversation with B.M. to-day positions selected are as follows:--" The message closed with the map co-ordinates of the positions chosen for our four batteries, and with a request for the map location of the Divisional Artillery Headquarters, to which the note was sent. Next day, the 26th, was a day of busy preparation. We learned that, for the first time, we should be in active co-operation with an American Division. The infantry of the British Division we were working under had been told off to protect the left flank of the American Division. The object of the attack was the capture of the last dominating strong-posts that guarded a section of the Hindenburg Line, immediately north of the section for which our own Divisional infantry had battled since Sept. 19. The enemy was to be surprised. Our guns, when placed in position, had to remain silent until they began the barrage on the 27th. That morning, therefore, topographical experts busied themselves ascertaining exact map locations of the batteries' positions so as to ensure accurate shooting by the map. The point was emphasised by the colonel, who wrote to all batteries:-- "Battery Commanders are reminded that as barrages on morning of 27th will be fired without previous registration of guns. "THE LINE LAID OUT MUST NOT BE ENTIRELY DEPENDENT ON COMPASS BEARING. Check it by measuring angles to points which can be identified on the map. All calculations to be made by two officers working separately, who will then check each other. "Every precaution must be taken not to attract the attention of the enemy to batteries moving forward into action. Nothing to be taken up in daylight, except in the event of _very_ bad visibility." The colonel rode over to see the C.R.A. of the Division to whom our Brigade had been loaned. After lunch he held a battery commanders' conference in his tent, and explained the morrow's barrage scheme. "Ernest," the dog, spent a delighted frolicsome hour chasing a Rugby football that some Australians near our waggon lines brought out for practice. Hubbard went on to the new positions to lay out his telephone lines. I occupied myself completing returns for the staff captain.