Union intelligence chief Colonel George Henry Sharpe is pictured with his staff at Brandy Station in June 1863. Left to right are Sharpe, John C. Babcock, an unidentified man, and John McEntee.

Lincoln Assassination

Civil War Intelligence

By Arnold Blumberg

The Union officer saw it quite clearly across the Rappahannock River: a hand-painted sign held up by a Rebel soldier that read, “Burnside and his pontoons stuck in the mud. Read more

Lincoln Assassination

The Confederate Spy Ring: Spreading Terror to the Union

By Peter Kross

The Civil War was fought out in the open on battlefields across the United States. But beginning in early 1864, the highest levels of the Confederate government decided that another, more clandestine war would be fought behind the lines in the North. Read more