The operations of Hooker and W.F. Smith in Lookout Valley, which were a part of the Chattanooga campaign, and which resulted in raising the siege of that strong-hold by opening river communication with the base of supplies, was not less original in conception or bold and brilliant in execution than the famous march around Vicksburg. Bragg was compelled to abandon all hope of starving out the garrison or capturing Chattanooga, and he determined to attempt the seizure of Knoxville with a portion of his army under Longstreet while he kept up a show of besieging Chattanooga with the remainder. It was this movement which gave Grant the opportunity for the display of his tactical abilities. Burnside, in advising Grant of Longstreet's approach to attack him, reported that he (Burnside) held a line on the Tennessee River, from London to Kingston, possessing unusual natural advantages, and expressed the opinion that he could easily defeat Longstreet in any attempt he might make to cross the stream. Grant immediately ordered Burnside to make no defense of the line which he held, but to fall back to Knoxville and stand a siege, promising to relieve him in a few days. The result of this was that Longstreet was deluded into crossing the Tennessee, and thus placed himself far beyond supporting distance of Bragg. Grant's strategy had thus far resulted in dividing the rebel army into two. He immediately went to work to defeat the parts in detail. Bragg, learning of the approach of Sherman to Grant's aid, attempted, on November 23, 1863, to evacuate his strong position before Chattanooga, and retire for safety beyond the mountains. Grant, unwilling to let him off so cheaply, made a movement to detain him, and by commencing his proposed operations a day sooner than originally intended, he forced the rebel leader to remain in his rifle-pits and accept battle. Grant in nowise changed his plan as determined upon six days before the operations began, except that he commenced them eighteen hours sooner than intended. On the afternoon of November 23d he did that which he had previously intended to do on the morning of the 24th. It was the movement of Granger's _corps_ into a position from whence, at the proper time, it was to assault the rebel centre. In this position the _corps_ was compelled to lie idle, and in waiting for the auspicious moment, for eighteen hours longer than it was originally intended it should. This assault, which was made on the 25th, and was the closing scene of the battles, has been erroneously called one of those "blind, uncertain strikings which won the Alma and Magenta," when in reality Grant had determined upon it six days before it was executed, and spent two entire days in watching from the very front of the line for the moment at which to attempt it. The entire three days' engagement is remarkable for the consistency with which the plan was followed out. General Halleck pronounced the battle to be the "most