Beauregard and Johnston found it a herculean task to rally the fleeing men and re-form the lines, but they succeeded at length; the battle was renewed, and from noon till nearly three o'clock it raged with greater fury than before. The fight was chiefly for the possession of the plateau called the Henry hill. Up and down the slopes the two armies surged in the broiling sun. Beauregard, like McDowell on the other side, led his men in the thickest of the fight. A bursting shell killed his horse under him and tore the heel from his boot; he mounted another horse and continued the battle. At half-past two the Confederates had been entirely driven from the plateau, had been pressed back for a mile and a half, and for the second time within three or four hours the Union troops raised the shout of victory. At three o'clock, while McDowell and his men were congratulating themselves on having won the battle, a faint cheering was heard from a Confederate army far across the hills. It grew louder and nearer, and presently the gray lines were seen marching gallantly back toward the scene of the battle from which they had been driven. The thrilling cry then passed through the Union ranks, "Johnston has come, Johnston has come!" and there was terror in the cry. They did not know that Johnston, with two-thirds of his army, had arrived the day before; but it was true that the remaining third, twenty-three hundred fresh troops, had reached Manassas at noon by rail, and after a forced march of three hours, under the command of Kirby Smith, had just united with the army of Beauregard. It was this that caused the cheering and determined Beauregard to make another attack on the Henry plateau. The Union men had fought valiantly in this, their first battle, untrained and unused to warfare as they were; they had braved the hail of lead and of bursting shells; they had witnessed their comrades, their friends, and neighbors fall at their feet to rise no more. They nevertheless rejoiced in their success. But with the long march and the five hours' fighting in the scorching July sun they were weary to exhaustion, and when they saw the Confederates again approaching, reënforced with fresh troops, their courage failed and they began to retreat down the hill. With waving colors the Confederates pressed on, opening a volley of musketry on the retreating Federals, and following it with another and another.