But the work of depletion commenced. Buell, with the Army of the Ohio, was sent east, following the line of the Memphis and Charleston railroad. This he was ordered to repair as he advanced--only to have it destroyed by small guerilla bands or other troops as soon as he was out of the way. If he had been sent directly to Chattanooga, as rapidly as he could march, sending two or three divisions along the line of the railroad from Nashville forward, he could have arrived with but little fighting, and would have saved much of the loss of life which was afterwards incurred in gaining Chattanooga. Bragg would then not have had time to raise an army to contest the possession of Middle and East Tennessee and Kentucky; the battles of Stone river and Chickamauga would not necessarily have been fought; Burnside would not have been besieged in Knoxville without the power of helping himself or escaping; the battle of Chattanooga would not have been fought. These are the negative advantages, if the term negative is applicable, which would probably have resulted from prompt movements after Corinth fell into the possession of the National forces. The positive results might have been, a bloodless advance to Atlanta, to Vicksburg, or to any other desired point south of Corinth in the interior of Mississippi. Will the reader bear in mind, that these military criticisms are not made by the author of the present work, although they fully commend themselves to his judgment, but are the calm and deliberate utterances of Ulysses S. Grant, by all consent the ablest general that ever commanded a Federal army, and a general minutely familiar with every detail of the situation which presented itself after Shiloh? They bear the authority both of intimate knowledge and of demonstrated military skill. Reduced to their lowest terms they amount to this: If Halleck had been an officer fit to command an army, he would have rushed upon Corinth with his three to one force on the very day on which he assumed command. The result could not have been in the least degree doubtful. But even after he had wasted seven precious weeks--three of them in preparation for an advance for which he was already fully prepared, and four more in an advance over a wholly undefended space of nineteen miles which he ought to have covered in one day or a day and a half at most,--there was still open to a capable general an opportunity which Halleck utterly failed to see or to seize. He had under his command 120,000 veteran troops, of the very best fighting quality and subordinately commanded by such masters of the military art as Grant, Sherman, Thomas, Buell, Lew Wallace, Nelson, Prentiss and their fit fellows. Making the most liberal allowance for detachments to guard railroads and to hold every acre of country conquered, General Grant says he could have mustered an effective army of 80,000 men or more for aggressive operations in any direction that might have seemed best to