Nice. I think that it's worth noting that this document made Lee A general of the CSA, not THE general of the CSA. Lee didn't take command of any army until he was appointed as commanding general of the Army of Northern Virginia in 1862.
In 1862, Lee indeed was appointed as commanding general, but Davis ran everything directly, and so it was an empty appointment. There was a debate in the rebel Congress in Feb '62, which approved Lee being formally assigned as GinC, but Davis veto'd it. Hence the issued order was:
GENERAL ORDERS, No. 14.
ADJT. AND INSP. GEN.S OFFICE
Richmond, March 13, 1862.
General Robert E. Lee is assigned to duty at the seat of government; and, under the direction of the President, is charged with the conduct of military operations in the armies of the Confederacy.
By command of the Secretary of War:
S. COOPER,
Adjutant and inspector General.
This position was not rescinded when Lee took command of the ANV, and Lee remained "charged with the conduct of military operations in the armies of the Confederacy" until 23rd February 1864, when Bragg was appointed, vice Lee. However, in 1861 he was initially appointed a Major-General in the Virginia Militia, and Brigadier-General in the ACSA (CSA regular army, which had no ranks above BG initially). The rebels quickly found that their regular BG's were ranked by any militia MG the states appointed, and so made them all full Generals to clarify their status. Congress authorised 5 full generals, and Lee was 3 of 5 (below Cooper and ASJ, and above JEJ and Beauregard). When ASJ was killed Bragg was promoted vice ASJ.