Alexander wrote two books: a personal memoir intended for his children, which remained unnoticed until 1989, when it was published to enormous critical acclaim as Fighting for the Confederacy; and this book, Military Memoirs of a Confederate, which was first published in 1907 and immediately recognized as a classic. Unlike Fighting for the Confederacy, which was based largely on Alexander's own recollections, Military Memoirs relies on a vast amount of research. It is undoubtedly the most accurate and most important firsthand general history of the Civil War.