* "Lone Star: A History of Texas and the Texans" (1968): This comprehensive history of Texas from its origins to the mid-20th century won the 1969 Texas Institute of Letters Award for non-fiction.
* "The Confederate Navy: A Study of Naval Policy and Practice in the Confederate States of America" (1971): This work is a detailed account of the Confederate Navy's organization, operations, and impact during the Civil War.
* "This Kind of War: A Study of Violence in the American Civil War" (1983): This book explores the brutality and savagery of the Civil War, analyzing its impact on the lives of soldiers and civilians.
* "The Destruction of the Confederacy" (1995): This book focuses on the military and political factors that led to the collapse of the Confederacy.
He has also published several other books and articles on Civil War history, including:
* "The South and Three Cultures" (1971)
* "Lee's Lieutenants: A Study in Command" (1983)
* "The American Civil War" (1988)
* "Fighting for the Confederacy" (2001)
Fehrenbach's work is known for its thorough research, clear writing style, and nuanced analysis. He is considered one of the leading authorities on the American Civil War.