JSDonald
Union intelligence activities were more decentralized that Confederate efforts. Allen Pinkerton, under the aegis of Gen. George B. McClellan, started the United States Secret Service.
American Civil War spies
Union intelligence activities
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replied to: JSDonald
tbone
Replied to: Union intelligence activities were more decentralized that Confederate efforts. Allen...
Slaves and smugglers provided some of the Union's most vital Civil War intelligence.