Harry could not turn his eyes away from this struggle, much of which was hidden in the smoke, and all of which was confused. The cannon of Hill and Ewell were thundering elsewhere, but here was the crucial point. The Round Tops rose on one side of the combatants. Round Top itself seemed too lofty and steep for troops, but Little Round Top, accessible to both men and cannon, would dominate the field, and he believed that Hood, as soon as his men crushed Sickles, would whirl about and seize it. But he could not yet tell whether fortune favored the Blue or the Gray. The generals from both sides watched the struggle with intense anxiety and hurried forward fresh troops. Woods and rocks and slopes helped the defense, but the attack was made with superior numbers. Longstreet himself was directing the action and a part of Hill's men were coming up to his aid. Sedgwick and Sykes, able generals, were rushing to help Sickles. The whole combat was beginning to concentrate about the furious struggle for the Peach Orchard and Little Round Top. Hood, in all the height of the struggle, saw the value of Little Round Top and tried his utmost to seize it. Again the Northern generals were to show that they had learned how to see what should be done and to do it at once. Little Round Top rose up, dominant over the whole field, a prize of value beyond all computation. Just then it was the most valuable hill in all the world. A Northern general, Warren, the chief engineer of the army, had seen the value of Little Round Top as quickly as Hood. The signalmen were about to leave, but he made them stay. An entire brigade, hurrying to the battle, was passing the slope, when Warren literally seized upon them by force of command and rushed the men and their cannon to the crest. Hood's soldiers were already climbing the slopes, when the fire of the brigade, shell and bullets, struck almost in their faces. Harry, watching through his glasses, saw them reel back and then go on again, firing their own rifles as they climbed over the rocky sides of Little Round Top. Again that fierce volley assailed them, crashing through their ranks, and again they went on into the flame and the smoke. Harry saw the battle raging around the crest of Little Round Top. Then he uttered a cry of despair. The Southerners, with their ranks thin--woefully thin--were falling back slowly and sullenly. They had done all that soldiers could do, but the commanding towers of Little Round Top remained in Union hands, and the Union generals were soon crowding it with artillery that could sweep every point in the field below.