The 153rd Infantry Brigade had carried out a number of patrols. They had already had three days in which to reconnoitre the enemy's position and study the lie of the land when they received orders to attack the enemy's line from half-way between Delville and High Woods to the western edge of High Wood. Patrols had located the enemy as occupying various positions, and these were subjected to bombardments during the forty-eight hours previous to the attack. At this stage in the war the shooting of the heavy howitzers had not reached that pitch of accuracy to which it afterwards attained. Nor was the liaison between the infantry and the Corps artillery as close as it became later. These causes and faulty observation made the shooting somewhat erratic at a place where very exact shooting was necessary. To these bombardments the enemy usually replied by shelling the Mametz Valley and the infantry in the line. The attack was launched at 6.10 P.M., and to the east of the wood proceeded some distance. However, on topping the rise in the middle of No Man's Land, the troops came under a very severe machine-gun fire, in which the accursed redoubt on the eastern corner of the wood, as usual, played a prominent part. In the wood itself the advance was again checked by enfilade machine-gun fire, and the result of the action was much the same as it had been in the case of the 154th Brigade. The net gains were, however, an advance of 200 yards on the right and centre, and of 70 yards in the wood. The men maintained themselves in their new positions in the wood for some time. Finally, however, owing to the intensity of the enemy's bombardment, they withdrew to their original positions. The right and centre consolidated their new position in posts, and held their gains. Orders were meanwhile issued for the attack to be resumed at 9.45 P.M. These orders were, however, not received at Divisional headquarters in sufficient time to enable them to be transmitted to the attacking companies before the attack was due to start. No further action therefore took place. The 31st July was remarkable for a violent bombardment of the country between Bazentin-le-Grand and Mametz Wood, which was practically continuous throughout the day. On 1st August, the 152nd Infantry Brigade relieved the 153rd, and the 154th Brigade moved forward to the support brigade area. It had now become quite clear that no good purpose could be served by ordering the Division to carry out any further local attacks. There was no reason to suppose that such attacks would meet with any more success than their predecessors. The 152nd Infantry Brigade was therefore instructed to adopt a vigorous policy of peaceful penetration. By that is meant that the policy was to be the acquisition of more ground by digging and by minor operations, without the delivery of any set piece attack involving a large number of troops.