On December 27, 1863, General Joseph E. Johnston issued General Orders, No. 1 (AoT) announcing that he was assuming command of the Army of Tennessee.
GENERAL ORDERS, No. 1.
December 27, 1863.
In obedience to the orders of His Excellency the President, the undersigned has the honor to assume command of the Army of Tennessee.
J. E. JOHNSTON,