While he did write a book titled "From Manassas to Appomattox", it's not considered a novel or literary work, but rather a memoir of his experiences during the Civil War.
If you're interested in authors with similar names, perhaps you meant James Longstreet (born 1933), a contemporary American author and poet. He's known for his works such as:
* "The Edge of the World"
* "The River of Doubt"
* "The Sea of Ice"
Please clarify if you were looking for information about a specific author or if you had a different James Longstreet in mind.