Hey Damon,
In "Regulations for the Army of the Confederate States" published in 1863 is the following:

Article II.
Rank and Command.
4. Rank of officers and non-commissioned officers, in Regular Army.
1st. General.
2d. Colonel.
3d. Lieutenant-Colonel.
4th. Major.
5th. Captain.
6th. First Lieutenant.
7th. Second Lieutenant.
8th. Cadet.
9th. Sergeant-Major...

Article IV.
Appointment and Promotion of Commissioned Officers.
21. Cadets appointed under Confederate law, shall be assigned to such duties, governed by exigencies of the service, as will best promote their military experience and improvement, until a military school shall be established by the Government for their instruction.