4:30
With consummate skill he placed his guns and infantry to catch both flanks and front of the coming foe . And then he waited for Grant to charge . Thousands of men in the blue ranks were busy now sewing their names in their underclothing . With the first streak of dawn , at 4:30 , they charged . They walked into the mouth of a volcano flaming tons of steel and lead in their faces . The scene was sickening . Nothing like it had , to this time , happened in the history of man .