These details are recited here, not by way of apology or defense of General Grant. His fame needs no defense, and very certainly his conduct in war needs no apology. Moreover all these circumstances, and others that reflect still more unfavorably upon Halleck's extraordinary treatment of the only Federal general who at that period of the war seemed able to achieve victories, are calmly and fully set forth in General Grant's own memoirs. But such details are necessary here, in explanation of that fair and full, and impartial history of the Confederate war, which is intended in these volumes. There were repeated occasions in the course of the struggle when vigor of generalship on the one side or upon the other, would very certainly have brought the war to an early conclusion, sparing both sides the tremendous sacrifices which a lack of capable generalship in the end entailed upon both. This post-Shiloh imbecility was one of those conspicuous, and conspicuously neglected occasions. There is not room for doubt that if Halleck had remained in his St. Louis headquarters, and had permitted Grant with the now combined armies of himself, Buell and Pope, to prosecute an instant and vigorous campaign, the whole Mississippi Valley would have been speedily brought under Federal control, with all the consequences that such a conquest must have involved. After the battle of Shiloh Grant had by his own estimate 120,000 men at and near Pittsburg Landing, or within easy call. For in addition to Buell's army Pope had reinforced him with 30,000 men. Beauregard had about 30,000 effectives at Corinth--or after Van Dorn reinforced him, perhaps 47,000. Grant's own expert opinion expressed in print, is that within two days he could and would--if let alone--have captured Corinth, driving the Confederate forces there into disorderly retreat if not compelling their surrender, and capturing all their stores. He would then have been in position to move in overwhelming force upon Vicksburg and Port Hudson, points not yet strongly fortified or heavily garrisoned. Capturing them, as he easily could have done, he would have made the Federals masters of the Mississippi above Baton Rouge, while Farragut was making himself master of all the lower reaches of the river. In the meanwhile Grant would have prevented that concentration and recruitment of Beauregard's army for which Halleck gave generous leisure to his enemy by delaying his own advance from Pittsburg Landing for three weeks of preparation and then consuming an entire month in pushing a force of three men to his adversary's one over an unobstructed and undefended space of less than twenty miles only to find when he got to his destination that his enemy, greatly strengthened, had in leisurely fashion retired to another position, taking with him every pound of provisions and every round of ammunition he possessed.