It was clear now that the German front was crumbling, and the whole British line was pushing ahead. The chief obstacle on the morning of August 25 came from an all-pervading mist. There was no check, however, anywhere in the advance up to 2 P.M., when the general line of the front was up to Mametz. The hardest fighting of the day was done at Billon Wood by the 173rd Brigade, all three battalions, the 2/2nd, 3rd, and 2/4th London, having real hard work, and standing to it like men. The place was strongly held with powerful artillery support, but it had been cleared before nightfall. By the same hour the Twelfth Division was east of Mametz, and the 8th {50} East Surreys were on the far side of Mametz Wood. As these familiar places came once more into their possession the troops felt that the tide had indeed turned. On August 26 the Eighteenth Division had cleared the ruins of Montauban, and the Twelfth, Carnoy, while the Fifty-eighth pushed on from Billon Wood, and wound up within a few hundred yards of Maricourt. This village was passed the next day, and altogether, on August 27 and 28, another three miles were added to the advance of the Twelfth and Fifty-eighth Divisions, the progress never ceasing, but being continually accompanied by fighting and maintained always against severe artillery fire. The Germans had thrown in three fresh divisions upon this front and the resistance was still very stiff. [Sidenote: August 26-28.] This was especially evident at Trones Wood, which was carried for the second time in this way by the Eighteenth Division on August 27. This fine assault was made by the 8th Berks and 7th West Kents, who carried it out with both flanks open to the enemy since the Welsh had been held in front of Delville. So heavy were the losses that the Berkshires were in danger of not being strong enough to hold what they had gained, so the 10th Essex were pushed into the fight. At 8 A.M. on August 27 a German Guards battalion drove through Trones Wood and pushed out the British stormers, but they held on by their teeth to the eastern edge of Bernafoy Wood. Here General Barker of the 53rd Brigade reorganised his very weary ranks, which had been greatly mixed in the advance and retreat. Just as evening was falling the remains of the gallant brigade darted forward once more and came to grips with the Francis Joseph Prussian Guards, who lay with many a machine-gun {51} among the brushwood. Led by Colonel Banks of the 8th Berkshires, the English infantry rushed into the wood and poured over the German position, taking forty machine-guns and completely overcoming the resistance. It was a fine exploit, and when the 53rd Brigade gave place to the 54th on the morning of August 28 they handed over to them the whole of this terrible grove, which has been so drenched by the bravest blood of two great nations. There was no further action in this quarter on August 28, but on the 29th the 54th