Meanwhile, the rest of the 20th Division, with the exception of the artillery, had been relieved between the 14th and the 18th by the 6th Division, and had moved to an area west of Poperinghe, with headquarters at Esquelbecque. Here a warning order was received on the 17th that the Division, less artillery, would be required in the next few days to move to the area of the Vth Corps, to which the 84th Field Company R.E. had been attached since the 15th. On the 19th the move began, and on the 20th Major-General Douglas Smith took over from the G.O.C. 24th Division a line facing Messines and Wytschaete, and extending from the river Douve a little west of the Ploegsteert-Messines road to a point just south-west of the cross-roads at Kruisstraat. The G.O.C. had not assumed command of this sector more than an hour, and the relief was not yet completed, when he received verbal instructions that the 20th Division would be required to move south as soon as it had been relieved by the 36th and 50th Divisions. Definite orders arrived next day, and the relief began at once. On the 23rd and 24th, units concentrated in the back area about Steenwerck and Hondeghem, where the 60th Brigade rejoined, and on the 25th and 26th the Division, leaving the artillery still at Ypres, went south to Doullens. CHAPTER IV THE SOMME _24th of July to 7th of September 1916_ The line between Beaumont Hamel and Hebuterne--Move to the Somme area--Battle of Guillemont. (_Vide_ Map II. and Sketch B.) As soon as all units were concentrated in the district round Doullens, the 20th Division was ordered to relieve the 38th in the hilly country between Beaumont Hamel and Hebuterne. Accordingly the 29th of July found the Division once more in the line, though not yet in the area of the great offensive which had been progressing since the first of the month between the Ancre and the Somme. Brig.-General W. E. Banbury, C.M.G., took over command of the 61st Brigade on the 28th of July from Brig.-General Sweny, who had returned to the Brigade a few days earlier, but was still suffering from the effect of his wounds.