On March 4 the advance which had steadily continued in the north spread suddenly southwards to Bouchavesnes north of Peronne, the sector held {8} by the Twentieth and Forty-eighth Divisions of Rawlinson's Army, which from this time onward was more and more engaged in the forward movement. Three machine-guns and 172 prisoners were taken. There was some interruption of the operations at this stage owing to severe snowstorms, but upon March 10 Tries, west of Bapaume, was taken by assault by the Eighteenth Division. This was a formidable point, well wired and trenched, so that the artillery in full force was needed for preparation. The infantry went forward before sunrise, and within an hour the village with 15 machine-guns and 290 prisoners was in British hands. The losses were light and the gain substantial. Grevillers also fell next day. This advance in front of Bapaume was of importance as it turned Loupart Wood, forming part of a strong defensive line which might have marked the limit of the German retreat. It was clear from that day onwards that the movement was not local but far reaching. The enemy was still too strong to be hustled, however, especially upon the northern sector of the operations, where Jacob's Second Corps was feeling the German line along its whole front. An attempt at an advance at Bucquoy upon the night of March 13, carried out by the 137th Brigade of the Forty-sixth North Midland Division, met with a check, though most bravely attempted. The two battalions concerned, the 5th South Staffords and 5th North Staffords, found themselves entangled in the darkness amid uncut wire and suffered considerable loss before they could extricate themselves from an impossible position. [Illustration: Fighting Line, February 24, 1917, and Fighting Line, March 1, 1917]