Look it up where? Your favorite neo-confederate websites? According to all actual, credible historical sources, the only time there were ever blacks fighting for confederates was at the very end of the war, and they only did that because the confederates were desperate. All of that aside, you are shifting the goalposts anyway because you still haven't addressed the fact that the founders, and found documents of the confederacy said that they were seceding to protect the institution of slavery.