He was the War Department intelligence chief during the American Civil War, a spy, and a colonel in the cavalry. He was put in charge of the investigation of th

One of the most important figures of the American Civil War penned this fascinating and unique memoir. John Gibbon's recollections of his service at Gettysburg

The Confederacy’s Secretary of State burned all the intelligence records he could find as federal troops entered Richmond in 1865. Union intelligence records

Global crime, cybercrime and terrorism in new and evermore dangerous form will threaten the safety of Americans and the security of the United States in the nex

This major addition to the history of the Civil War is a “fast-paced, fact-rich account” (The Wall Street Journal) offering a detailed look at President Abr