...posted a force of six hundred men and three guns to hold the crest of the mountain in his rear, while with the remainder he confronted the force McClellan held in his front. After a sharp fusilade, Rosecrans carried the crest, driving the defenders in upon Pegram's intrenchments; but against this force he did not push his advance, and as McClellan, awaiting the sounds of his musketry before joining in wi...