General Robert E. Lee recalled Echols' Brigade was recalled to rejoin the Army of Northern Virginia near Cold Harbor during the Siege of Petersburg. On August 22, 1864, he was given charge of the District of Southwestern Virginia, and on March 29, 1865, Echols was assigned command of the western department of Virginia, relieving General Breckinridge, who had joined the staff of President Jefferson Davis. On April 2, Echols, with nearly 7,000 men, began a hasty march to unite with Lee.