... on the 10th showed the enemy strongly posted in a mountain defile, where, with the large force he was supposed to have, a direct attack in front could only be made at great sacrifice. That evening Brigadier-General Rosecrans proposed a plan to turn the position, and McClellan (with some reluctance, it is said) permitted him to attempt it. At daylight of July 11th, Rosecrans, with portions of four regiments — a...