ALAN PINKERTON
(Allan J. Pinkerton)
Pinkerton worked out a plan to spirit Lincoln through Baltimore where he had to change trains.
Although escaped slaves could not fight for the North, they could be very useful on road building and other military engineering projects needing labor. Every time a slave escaped, it diminished the military engineering labor of the Confederates by one but added to that of the Union. Pinkerton and others however engaged many escaped slaves who volunteered for an incredibly dangerous mission. They returned back to the Southern lines into the slave work gangs, and organized slave escapes of groups of Blacks. In addition, many of them, by observing and overhearing the Confederate soldiers gained information regarding supply and troop levels and movements, and this they brought back to the Union officers. Those that were caught were executed as spies. Escaped slaves were espionage and covert operations agents before they were allowed to be soldiers.
Allan J. Pinkerton was a Scottish–American detective and spy, best known for creating the Pinkerton National Detective Agency.