Okay, so the score is: United States: 100 black commissioned officers. Rebels: 1 black non-commissioned officer.
I’ll bet “our” sargeant was treated better by his fellow Cavalrymen than “your” officers were by their contemporaries.
How many slave rebellions were there during the war? Answer, I don’t know but if there was a slave uprising, there is very little evidence of one, even up to the last days of the war.