I do not fully understand the military records, and know that oftentimes there are re-enlistments/demotions, etc/ How do you know the rank when mustered out.? As stated below, the Virginia records indicate John was "Promoted to Full 4th Corporal. Promoted to Full Priv." Is the last rank generally the one they muster out as? Or after all these years maybe there is no way to know. Just curious.

John Rader
Enlistment Date: 19 Mar 1862
Rank at enlistment: Private
Enlistment Place: MT. Jackson, VA
State Served: Virginia
Survived the War?: No
Service Record: Enlisted in Company I, Virginia 7th Cavalry Regiment on 19 Mar 1862.
Promoted to Full 4th Corporal.
Promoted to Full Priv.
Mustered out on 30 Aug 1864 at CSA Hospl, Charlottesville, VA. (buried at UVA Confederate Cemetery)
Sources: The Virginia Regimental Histories Series