The Eighth Division, reconstituted under its veteran commander, General Heneker, after its murderous and heroic experience upon the Aisne, was the right-hand unit of Hunter-Weston's Eighth Corps, which was the next unit of the First Army. The front of this Corps was formed by the Twentieth Division in the north and the Eighth in the south, and its rôle at this period was to stand fast, but by a succession of well-conducted enterprises the Eighth Division was continually encroaching upon the German lines. Presently, as will be seen, when the line was advanced on the south, the Eighth Corps was unleashed and sprang forward in combination with the general advance on either flank. On its left, and following its general movements, was Holland's First Corps, which was allotted, after September 20, to the Fifth Army, so that instead of being Horne's northern unit it became the southern Corps of Birdwood. [Sidenote: August 27, 28.] On August 27 the Canadians went forward once more, the 9th Brigade on the left near the river, while the 4th and 5th were on the right. Again there was a day of steady advance, which was rather a slow pursuit than a battle. In the evening the line ran east of Cherisy, but west of Pelves and Haucourt. In the north the Fifty-first Division attacked Greenland Hill, which was a most important piece of high {142} ground--so important that it may be said to be the point on which the whole great advance to the Canal du Nord pivoted. The attack was delivered with great spirit by the 7th Gordons and 6th Black Watch of the 153rd Brigade, but they were unable to get the summit; while the 6th Seaforths to the south of them were also held up by machine-gun fire. Some advance was made, however, by the 154th Brigade, which had now come in on the north of the line. That night the 25th Brigade of the Eighth Division took over this northern section. August 28 saw the Canadians still continuing their slow but inexorable advance. On that morning their 7th Brigade took Pelves and Boiry. There were two strong counter-attacks upon the Second Canadian Division in the evening near Artillery Hill, and for a time the front line was pushed back, but it soon recovered and held firm. There was quiet now on the Canadian front, but on August 29 the 154th Brigade of the Highland Division made a fresh attack upon Greenland Hill, which was captured by the 4th Gordons and 7th Argyll and Sutherlands with only slight losses. This important success caused the evacuation by the enemy of several positions commanded by the hill, especially Delbar Wood. This capture screened the left flank of the Canadians and drew from their General a generous message of thanks, in which he said, "That your division after its continuous fighting for the last year was able to take and keep the strong position of Greenland Hill, testifies to the fact that the fighting qualities of the Fifty-first are second to none in the Allied armies." [Sidenote: August 30.]