Yet the last six months of 1916 had advanced our front no more than some eight miles--along the Albert-Bapaume road. At no point were we more than ten miles from our beginnings. All that showed on the map was that the enemy’s line to the north had been pinched into a salient which, starting from just east of Arras, followed the line of the old German front built up two years before, through Monchy-au-Bois, Gomiecourt and Serre to the high white grounds above Beaumont-Hamel. Thence it turned east across the Ancre, seven or eight kilometres north of Arras, skirted Grandcourt, crossed the arrow-straight Albert-Bapaume road by the dreary Butte de Warlencourt, ran north-east of Gueudecourt, and on the rim of the rise above Le Transloy, till it crossed the Péronne-Bapaume road just north of Sailly-Saillisel. Here it swung south-east from Rancourt and Bouchavesnes down the long slopes to the Valley of the Somme, and its marshes west of Péronne. Thence, south-westerly by Berny-en-Santerre, Ablaincourt to the outskirts of Chaulnes, ending at Le Quesnoy-en-Santerre, where the French took on. The twenty-five mile stretch from Le Transloy to Le Quesnoy was the new section that had been handed over to the British care, piece by piece, at the end of the year. To meet this pinch and all that they could see that it meant, the Germans had constructed, while they and the weather held us, elaborate second and third lines of defence behind their heavily fortified front. The first barrier--a double line of trenches, heavily wired, ran behind Sailly-Saillisel, past Le Transloy to the Albert-Bapaume road, Grévillers and Loupart woods, and _via_ Achiet-le-Petit to Bucquoy.