04/12/1868
https://www.presidency.ucsb.edu...
"Brevet Major-General Edward R. S. Canby is hereby assigned to the command of the Second Military District, created by the act of Congress of March 2, 1867, and of the Military Department of the South,..."
"Major-General Daniel E. Sickles is hereby relieved from the command of the Second Military District."
"In consequence of the unfavorable condition of the health of Major-General George H. Thomas, as reported to you in Surgeon Hasson's dispatch of the 21st instant, my order dated August 17, 1867, is her..."
"Major-General P. H. Sheridan will at once turn over his present command to the officer next in rank to himself, and, proceeding without delay to Fort Leavenworth, Kans., will relieve Major-General Han..."