[Illustration: Advance of First, Third, and Fourth British Armies from
August 21, 1918, to September 2, 1918.
Arrows point to the Rupture of the Quéant-Drocourt Line]

Upon the left of the Third Corps, which was, as already described, fighting its way along the north bank of the Somme, there lay the Fifth Corps (Shute). On its left was the Fourth Corps (Harper), and north of that the Sixth Corps (Haldane). It was to these three units that the opening of the attack was entrusted. The frontage was about ten miles, extending from Moyenneville in the north to the Ancre in the south, so that it just cleared the impossible country of the first Somme battlefield—which even now a spectator cannot survey without a feeling of wondering horror, so churned up is it from end to end by the constant thresh of shells, burst of mines, and the spade-work of three great armies. The result of the first day's fighting was an advance of several miles along the whole front, with the capture of Beaucourt, Bucquoy, Moyenneville, and other villages, the farthest advance coming close to the Arras-Albert Railway, and to the village of Achiet-le-Grand.

There had been some recent retirement of the German line at Serre, which gave the clue to the British Commanders that a general retreat might take place on this particular portion of the front. It was very necessary, therefore, to strike at once while there was certainly something solid to strike against—and all the more necessary if there was a chance of catching the enemy in the act of an uncompleted withdrawal.

It was nearly five o'clock when the battle began, and it was the turn of the Germans to find how fog may disarrange the most elaborate preparations for defence. The mist was so thick that it could only be compared to that which had shrouded the German advance on March 21. Several miles of undulating country lay immediately in front of the attackers, leading up to a formidable line of defence, the old Albert-Arras Railway lying with its fortified embankments right across the path of the British Army. Bucquoy in the centre of the line, with the Logeast Wood to the east of it, and the muddy, sluggish Ancre with its marshy banks on the extreme right, were notable features in the ground to be assaulted.

The Fifth Corps, under General Shute, followed the curve of the River Ancre on a front of 9000 yards. It was poorly provided with guns as the Corps to the left required a concentration of artillery, and it had no tanks since the marshy valley and sluggish stream lay before it. The Thirty-eighth Welsh Division (Cubitt) lay on the right and Campbell's Twenty-first on the left, each of them with two brigades in front and one in reserve. The Seventeenth Division (Robertson) was in support. The problem in front of General Shute's Corps was a most difficult one. Before it lay this evil watercourse which had been flooded by the Germans and was 300 yards wide at one part. All bridges were gone, and the banks were low and boggy. The main stream was over six feet deep, and its channel could not be distinguished from the general flood. The whole morass was covered by a tangle of fallen trees, reeds, and artificial obstructions. To the east of the river ran high ground, strongly held and fortified, from Tara Hill above Albert to the Thiepval Height, south of Grandcourt. The west bank was so overlooked that no one could move unscathed. And yet it was clear that until this formidable obstacle was surmounted it was neither possible for Rawlinson to advance from Albert, nor for the Fourth Corps on the left to assault Miraumont.

The movements of Shute's Corps on August 21 were preliminary to their real attack. On that date the Twenty-first Division advanced on the left flank, in close touch with the Forty-second Division of the Fourth Corps. Beaucourt was taken in the movement. By this operation the Twenty-first Division reached a point where the flood was narrower at St. Pierre Divion, and here some bridges could be constructed and preparations made for the passage.

In the case of Harper's Fourth Corps on the left the advance on August 21 was limited, since no serious attack could be made upon Miraumont while the high ground to the south was untaken. At this date Harper's Corps consisted of five divisions, the Fifth, Thirty-seventh, Forty-second, Sixty-third, and the New Zealanders. Of these the Thirty-seventh Division (Williams) was on the left, covering the flank of the Sixth Corps, while the Forty-second (Solly-Flood) was on the right. We shall now follow in the first instance the work of the Fifth Corps on the extreme right from the beginning of the battle until the pause preceding the attack of September 18. There are, it is true, objections to continuous narrative, since it stands in the way of a bird's-eye view of the whole operation; but on the other hand the object and scope of any series of advances become unintelligible unless they are linked up from day to day. We shall therefore take the Fifth Corps as one story until it reaches the Hindenburg Line. We shall then follow the work of the other flank corps of Byng's Third Army, which was Haldane's Sixth Corps, bringing it up to the same point. It will finally, after we have established two solid bastions, be easy to deal with the central unit, Harper's Fourth Corps, which filled up the space between. We shall then have a narrative which will cover four strenuous weeks in which the Third Army carried out a notable advance.

August 22.

It has been explained that Shute's Fifth Corps found itself with 9000 yards of river in front of it, and that on August 21 the Twenty-first Division had seized a favourable point for crossing near St. Pierre Divion. There was no further advance on the morning of the 22nd, but to the south Rawlinson's left was fighting its way to the eastern exits of Albert, and the bridges in the town were being got ready for use. All day a heavy fire was kept up on the German lines east of the river, and especially upon the rising ground called Usna Hill. As the day passed small bodies of troops began to cross the Ancre from the Fifth Corps front and to make a lodgement at the farther side. South-west of Thiepval part of the 14th Welsh from the 114th Brigade, wading over breast deep with their rifles and pouches held high, got into a trench on the farther bank and held their own. The Twenty-first Division also got some companies across at St. Pierre, while it beat off several attacks upon the north side of the river. During the night the 50th Brigade of the Seventeenth Division was slipped into the line, between Campbell's North Countrymen on the left and Cubitt's Welshmen on the right. General Shute was now ready for his great effort in crossing the river.

The first stage in this difficult operation was carried out early on August 23, when the 113th Welsh Brigade, which had quickly passed over the Albert bridges, made a sudden attack about dawn on Usna Hill, at the same time as the Eighteenth Division to the south attacked Tara Hill. The position was taken with 200 prisoners, while the 115th Welsh Brigade got up to the chalk-pit, east of Aveluy, where they joined hands with their comrades on the Usna line. Thus, before evening of August 23 the Thirty-eighth Division was east of the river from Albert to Aveluy, while the Twenty-first still held its bridgeheads at St. Pierre Divion. The slope of the Thiepval Ridge with all its fortifications still lay in front, and this was the next objective of the Fifth Corps. It was carried by a night attack on August 23-24.