Rosecrans learned of the order on October 19, hours after his subordinates became aware of it. He immediately made arrangements to leave Thomas in command, then departed Chattanooga that night for his home in Cincinnati to await further orders.
Rosecrans was soon given command of the Department of Missouri from January to December 1864, but ultimately he had no further major role in the War Between the States. Rosecrans retired from military service in March 1867.
* Apparently, in order to permit Grant the decision whether to replace Rosecrans, two orders were actually written, either of which Grant was free to act upon. One retained Rosecrans as commander, while a second relieved him and placed Thomas in command.