The next striking feature of American participation in the squeezing of the Germans out of the Soissons-Marne-Rheims salient was the crossing of the Ourcq and the taking of Sergy and Seringes just beyond that river. The Germans had meant to make a stand on the north bank of the Ourcq and hold the Americans on the south bank while their main withdrawal was effected to the Vesle; but the charge of the Americans over the river balked this plan. The fighting thus shifted to the north side, where the Germans, reenforced by two divisions of Bavarian Guards, settled down to resist the Americans to the utmost. Although heavily assailed, the Americans replied in kind, especially in and out of Sergy, three miles southeast of Fère-en-Tardenois. The Germans bent all their strength toward forcing a recrossing of the Ourcq. The Americans held their ground, and it was the Germans who finally had to yield, but only after vicious and bitter fighting. The Americans began their attack on Sergy early on the morning of Saturday, July 27, 1918. By night they had been driven back some distance, but on Sunday morning, when they resumed their advance under cover of their artillery--a few pieces going forward with their advanced line--they proceeded almost unchecked to the river, crossed the river and entered the town. The Germans used gas; but the Americans had long ago had their baptism of gas fumes and knew how to utilize their masks and avoid the ravines through which the gas filtered. When the town was occupied there was some street fighting, which the Germans abandoned by retiring to higher ground beyond. On Monday morning, July 29, 1918, came a counterattack by the Fourth Prussian Guard Division, which had arrived only a few hours before from their training ground in Lorraine. A conflict then ensued which ebbed and flowed constantly, the town changing hands nine times before it was won. The Americans immediately advanced two miles, again defeating the Prussian Guards and Bavarians, though the latter succeeded in winning Cierges, southeast of Sergy, and holding it for a spell. By the night of July 30, 1918, the Americans were well to the north of Sergy, on long slopes approaching heavy woods beyond Nesle, a town directly east of Seringes-et-Nesle, for which the Germans fought bitterly. As a preliminary to the attack on Seringes, a strongly fortified position, Meury Farm, had to be taken, as from the farm the Seringes defenses could be outflanked and approached by a less steep ascent than by a direct attack. In this group of farm buildings the Germans had, on their withdrawal, left behind a strong force of machine gunners and infantry, which set up a strong defense. "The Americans," ran one account, "moved forward through the yellow wheat fields, which were sprayed and torn by bullets. But they advanced as though on a drill ground.