This image is the cover for the book Rebel Raider, The World At War

Rebel Raider, The World At War

A portrayal of the exploits of a Confederate military adventurer, John Singleton Mosby. Basically, Mosby ran a guerrilla operation in Virginia wherein he attacked and plundered the supply lines of the Union armies. (Goodreads)

H. Beam Piper

Henry Beam Piper, (1904 - 1964) was an American science fiction author. He wrote many short stories and several novels. He is best known for his extensive Terro-Human Future History series of stories and a shorter series of "Paratime" alternate history tales. He wrote under the name H. Beam Piper. (Wikipedia)

OTB ebook