Lol. I’ve read more books on the Civil War than you have (unless you have read more than thirty-five or forty). I suggest you read more than a couple. And try ones from varying perspectives for fun. :-)
35 or 40? That's all?
That's why I'm not impressed by most of the historiography regarding black confederates. Were there servants who went with their masters, slaves hired out by their masters to dig ditches, tend horses, and cook? Of course there were. But it's a far cry from that to making some sort of argument that the war wasn't about slavery, which seems to be the agenda of these works.
Oh, and I've read plenty of the pro-southern stuff, from Jefferson Davis to Tommy DiLorenzo. Pretending that these works are unbiased while other works are hopelessly biased is simply absurd.