Examines military intelligence during the Civil War, drawing on original sources to describe the various intelligence campaigns.

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

“A treasure trove for historians . . . A real addition to Civil War history” (Kirkus Reviews, starred review). At the end of the American Civil War, most of

Tells the story of Harriet Tubman and other slaves and free African-Americans who risked death to gather information about the Confederacy for the Union during

"Dyer captures the intricacies of multiple loyalties in the midst of seemingly unified secessionist sentiment. Skillfully written and carefully researched, this