The killing of General R. L. McCook, under the circumstances, was regarded as murder, and excited deep indignation both in and out of the army. Even Buell issued orders to arrest every able-bodied man of suspicious character within a radius of ten miles of the place where McCook was shot, to take all horses fit for service within that circuit, and to pursue and destroy bushwhackers.( 2) With the arrest of a few men and the taking of some horses, however, the incident closed so far as official action was concerned. Memphis was taken, on June 6, 1862, by Flag Officer C. H. Davis, who had with him a Ram Fleet under Colonel Charles Ellet, Jr., and an Indiana brigade under Colonel G. N. Fitch.( 3) The plan of the Confederate invasion, as already stated, was to operate on two lines. Kirby Smith from Knoxville was first to move on and take Cumberland Gap, then held by General George W. Morgan. Bragg was at Tupelo, Mississippi, July 18th, but, fired with the idea that on Kentucky being invaded her people would flock to arms under the Confederate standard, he commenced transferring his army to the new field of operations and removed his headquarters, July 29th, to Chattanooga. Kirby Smith took the field August 13th, moving on Cumberland Gap, but, finding it impregnable by direct attack, he left General Stevenson with a division to threaten it and advanced on Lexington. John Morgan with a considerable body of cavalry preceded Smith into Middle Kentucky, and his incursion was taken as a forerunner of the greater one to follow. Alarm over the audacious movement was not limited to Kentucky; it spread to Ohio, and there were fears for the safety of Cincinnati.