It covered the ground from Albert in the north, where it was working in close liaison with the Welsh Division on the right of the Fifth Corps, down to a point near the Somme where it was in touch with the Australians. The immediate object of the operations was to eject the enemy from the positions in and around Albert which he had held for four months, and also from his whole defensive system opposite to the Amiens defence line, which latter had been regained in the previous fighting. On the day of battle the Forty-seventh London Division was on the right of the Corps line, the Twelfth Division in the centre, and the Eighteenth Division on the left. To this last was confided the difficult and important operation of clearing Albert, and of establishing light bridges over the Ancre so as to cross that stream and attack the high ground east of the town on the Becourt Road. There was to be no preliminary bombardment, but machine-gun and artillery barrages were to cover the infantry. The zero hour was 4.45, and at the signal the Forty-seventh and Twelfth Divisions advanced behind a creeping barrage, moving at the rate of 100 yards in four minutes, and as thick as 250 field-guns could {46} make it. With such a van of destruction in front the infantry came forward without undue losses, though a particular strong point named the Pear Tree just on the interdivisional boundary held fast and was destined to give trouble for several days to come. As an observer remarked, "Anything British, from a helmet to a tank, which showed over the crest was met by the sweeping fire of many machine-guns, while shells from trench mortars fell in the ranks of men following up. It was only when the general attack was continued that this hornet's nest could be cleared." Save for this point the general objectives marked out for these divisions, which meant an advance of between two and three miles, were successfully made good, but an attempt to follow up with cavalry and whippet tanks could not be persevered in, so stiff was the opposition. It was soon found that the enemy in the Forty-seventh Division sector was not only capable of defence, but of aggression, for about 4 in the afternoon his infantry advanced in a strong attack with a powerful artillery backing, and drove with such violence into the 22nd, 23rd, and 24th Londons, forming the 142nd Brigade, that they were temporarily thrown back. Their right held firm, however, as did the Third Australian Division to the south, so that no gap was formed. Being reinforced by the 175th Brigade from the Fifty-eighth Division in reserve, the Londoners soon reformed their ranks, greatly thinned both by their advance in the morning and by the German onslaught in the afternoon. The enemy's front was so menacing that the rest of the day and part of August 23 were spent in reorganisation and consolidation.