Yet I've heard repeatedly of long periods during which the franchise and other civil rights were denied to leading Confederates in the reconstructed South.
Do you know which story is correct?
I can't cite many specific examples, but possibly we're talking about Federal law on treason, versus reconstruction era state and local ordinances.
Confederate officials pardoned for treason might still face laws which prevented them from holding offices in the post-war government.
However, one example which does come to mind is Lee's Lieutenant, James Longstreet, who settled in New Orleans after the war, and was appointed to various government positions, including adjutant general of the state militia and by 1872 a major general in command of all militia and state police forces within New Orleans.
All this for a man of whom President Johnson said,
But, Regardless of President Johnson's opposition, the United States Congress restored Longstreet's rights of citizenship in June 1868.
And I'm certain a little research could dig up a list of Confederate generals & others who returned to Congress, became their states' governors, etc.
So my overall impression is that former Confederates were readmitted to citizenship pretty much based on however much they desired it.
But Lost Causers who told the world:
;-)