Operation Dark Heart' describes Lt. Col Anthony Shaffer's time in Afghanistan leading a black-ops team.
The only problem with this story is that nobody running a truly black operation would ever admit the true nature of the operation, because black operations are criminal in nature, or so secret that they can never be officially revealed because they would reveal a permanent secret policy. Take Satanism for example. Another example of a truly black operation is what was done to Aafia Siddiqui and her children, which was essentially state-sponsored Satanism. None of the perpetrators of that war-crimes spree is likely to ever write a book about it, are they?