Don't get mad over the nature of your argument, Partisan. Your story about Stevens provided a cute little anecdote, and it also showed that on the particular day it happened he won about 100 dollars gambling, but it proves absolutely nothing about his long run losses from the same habit.
All you do is quote (not so cute) anecdotes to substantiate the existence of those imaginary black rebels.
Anecdotes, when true, function as legitimate arguments in establishing the existence of their subject matter.
Yesterday, you cited an April 1865 report from a U.S. Army officer that he had captured 300 or so black teamsters along with 320 rebel soldiers, and then just insisted that he was mistaken, because those teamsters were really some Confederate military unit.
That's cause history tells us that they were! The battle he describes in that report was the April 5th one near sailor's creek and the blacks that were known to be there were the soldiers from Turner's Richmond Brigade mustered on March 21st.