After a few days’ rest in the neighbourhood of Treux the Division again moved forward on the 26th into the line near Morval, only to be relieved next day by the 2nd French Division, which took over that part of the line in preparation for an attack on Sailly-Saillisel. The 20th then took over from the 21st Division of the XVth Corps a line extending from the cross-roads half-way between Gueudecourt and Lesbœufs to a point 250 yards east of Gueudecourt. All these constant changes of headquarters meant necessarily very hard work for all the personnel of the Signal Service, made more difficult by the continual rain and appalling mud. In spite of these difficulties, communications were most successfully maintained throughout this period. The new sector was held for the first week by one brigade--the 61st--which went in on the night of the 29th/30th. The 60th Brigade was in support near Trônes Wood, the 59th remaining at Carnoy in reserve, and Divisional Headquarters returned to Bernafay Wood. Here also the headquarters of the Divisional Artillery was established on the 29th, when Brig.-General Hotham look command of the artillery covering the 20th Division, composed of his own three brigades and certain others which varied for the first few days, but which after the 4th of October consisted of the Guards Divisional Artillery and the 24th Field Artillery Brigade of the 6th Division. The batteries were in a valley about 800 yards north-east of Delville Wood, known from its map reference as Toc 7 Valley. It was a most unpleasant place. Within a length of a mile all the guns of the whole of the artillery covering the 20th Division were crowded together, being in many places only ten yards apart. The gun-pits were very rough at first, consisting of a sandbag parapet with a tarpaulin or matting over the gun. The men lived in slits in the ground, with a sheet of corrugated iron over the top and a great deal of water at the bottom. The Germans knew well enough that our guns were concentrated in this valley--the only place in the neighbourhood that gave any flash cover--and shelled the positions continually. There was great difficulty at this time in getting up ammunition, all of which had to come by night over the exposed ridge east of Delville Wood. Owing to wet weather and the many shell craters the ground was so bad that it was impossible to get wagons up to the gun positions. After a few days it was arranged that all ammunition should be brought up by pack; and this became the regular way of supplying the guns as long as they remained in this valley.