Nothing is more justly odious in military conduct than embodying slanders against other commands in an official report. It puts into the official records misrepresentations which cannot be met because they are unknown, and it is a mere accident if those who know the truth are able to neutralize their effect. In most cases it will be too late to counteract the mischief when those most interested learn of the slanders. All this is well illustrated in the present case. Hooker's report got on file months after the battle, and it was not till the January following that Burnside gave it his attention. I believe that none of the division commanders of the Ninth Corps learned of it till long afterward. I certainly did not till 1887, a quarter of a century after the battle, when the volume of the official records containing it was published. Burnside had asked to be relieved of the command of the Army of the Potomac after the battle of Fredericksburg unless Hooker among others was punished for insubordination. As in the preceding August, the popular sentiment of that army as an organization was again, in Mr. Lincoln's estimation, too potent a factor to be opposed, and the result was the superseding of Burnside by Hooker himself, though the President declared in the letter accompanying the appointment that the latter's conduct had been blameworthy. It was under these circumstances that Burnside learned of the false statements in Hooker's report of South Mountain, and put upon file his stinging response to it. His explicit statement of the facts will settle that question among all who know the reputation of the men, and though unprincipled ambition was for a time successful, that time was so short and things were "set even" so soon that the ultimate result is one that lovers of justice may find comfort in. [Footnote: The text of Burnside's supplemental report is as follows:-- "When I sent in my report of the part taken by my command in the battle of South Mountain, General Hooker, who commanded one of the corps of my command (the right wing), had not sent in his report, but it has since been sent to me. I at first determined to pass over its inaccuracies as harmless, or rather as harming only their author; but upon reflection I have felt it my duty to notice two gross misstatements made with reference to the commands of Generals Reno and Cox, the former officer having been killed on that day, and the latter now removed with his command to the West.