Three thousand of the Guards Corps, the flower of the Prussian Army, were sent like a catapult at the gap in the French line, immediately in front of Rheims. Five times they charged, and with such heroic daring and such penetrative energy that General Foch did not dare break from his position. As they came up for the fifth assault, a wild cheer of admiration broke out along the French line. But the rifles spoke steadily, none the less for that. After the fifth assault, barely a hundred men were left, nearly all wounded. They reversed rifles, a sign of surrender, and in all honor they were received by General Foch, who conducted them to the hospital in the rear. They lived up to the full the most heroic traditions of the old Prussian corps and they saved that whole German force from destruction. Still, with the annihilation of the Death's Head Hussars and the remainder of the Prussian Guards Corps on the same day, the forces under General Foch felt that in part Rheims had been avenged. The other section of this second phase of the Aisne consisted of the trench warfare, which solidified from September 19 to October 6, 1914, under conditions of extreme difficulty and more than extreme discomfort. It was practically the establishment of a trench campaign that lasted all winter, and revived the centuries-old fortress warfare, applying it under modern conditions to field fortifications. The French during that winter on the Aisne never quite succeeded in rivaling the mechanical precision of the German movements; the Germans, on the other hand, never showed themselves to possess the emotional fervor of the French with the bayonet. In many places German and Allies' trenches almost touched each other. The first two weeks at the Aisne were one continual downpour, and the foundation of that ground is chalk. On the sides of the plateau of Craonne, after two weeks' rain, the chalky mud seemed bottomless. "It filled the ears and eyes and throats of our men," wrote John Buchan, "it plastered their clothing and mingled generously with their diet. Their grandfathers, who had been at Sebastopol, could have told them something about mud; but even after India and South Africa, the mire of the Aisne seemed a grievous affliction." The fighting was constant, the nervous strain exhausting, and the cold and wet were even harder to bear. There had as yet been no time to build trenches with all conveniences, such as the Germans possessed on the crest of the ridge, and the trenches of the Allies were a chilled inferno of woe.