..., and by flanking it through gaps to the south, had reached the valley on the east side, threatening to immure Stevenson in the gap as Morgan was later by the Confederates. General Smith moved from Knoxville to meet Morgan, if he should turn in that direction; but on the 18th Stevenson was compelled to evacuate the gap before Morgan's superior numbers, and the Federals occupied the Gap. General Smith, wh...