At 9 a. m. the French artillery directed their fire successively against the first-line trenches and the supporting trenches. The attack took place in perfect order. The infantry were already swarming into the German trenches when the German artillery opened its defensive fire. The French counterbatteries hampered the German pieces and the reserves in the rear suffered little from their fire. At 9.45 a. m. the two columns which were attacking the extremities of the salient of la Poche joined hands. The position was surrounded. Those Germans who remained alive inside it surrendered. At the same time a battalion was setting foot in the defenses of the southern edges of the wood of Trou Bricot. The battalion that followed, marching to the outside of the eastern edges, executed with perfect regularity a "left turn" and came and formed up alongside the communication alleys as far as the supporting trench. At the same moment, in the open country to the north of Perthes, the French troops surmounted the three first-line trenches and, preceded by artillery, made a quick march to the York trench and occupied it almost without striking a blow. Farther to the east, along the road from Perthes to Tahure, the French advance encountered greater difficulties. Some centers of the German resistance could not be overcome. A sheltered machine gun continued its fire. An infantry officer, with a petty officer of artillery, succeeded in getting a gun into action at a distance of over 300 yards from the machine gun and firing at it at close quarters. Of the troops that were advancing to the north of Perthes, some made for the eastern border of the wood of Bricot, where they penetrated into the camps, ousting the defenders and surprising several officers in bed. Late in the afternoon a French regiment had reached the road from Souain to Tahure. Other units were marching straight toward the north, clearing out the little woods on the way. They there captured batteries of which the artillerymen were "riveted to their guns by means of bayonets." The same work of clearance was meanwhile being performed in the woods extending east of the road from Perthes to Souain and Tahure, where batteries were charged and captured while in action. At this spot a regiment covered three miles in two hours and captured ten guns. From midday onward the rate of progress slackened, the bad weather making it impossible for the French artillery to see what was going on, and rendering the joining up movements extremely difficult. From the Buttes de Souain and Tahure the Germans directed converging fires on the French, who were advancing there along very open ground. Nevertheless, they continued their advance as far as the slopes of Hill 193 and the Butte de Tahure and there dug themselves in.