H. Beam Piper 
Rebel Raider 

In the gripping Civil War story "Rebel Raider, " H. Beam Piper takes a break from the science fiction that was his typical stock-in-trade and beams readers back into the midst of the conflict that ripped the United States asunder. The tale focuses on the exploits of Confederate leader John Singleton Mosby, who gained acclaim as a ruthless and tactically brilliant raider.