Black Dispatches - A Signal Achievement

A Signal Achievement

No discussion of intelligence activities by black Americans during the Civil War would be complete without mention of a popular story about a black couple who provided intelligence on Confederate troop movements to the Union during the fighting around Fredericksburg, Virginia in 1863. The original account evidently appeared in a newspaper or magazine article written by a Union officer who claimed to have been a witness to the events. No official records have documented this story, and the claims about the value of the intelligence produced are questionable. But there is probably some factual basis for the tale.

The story involved a runaway slave named Dabney, who crossed into Union lines with his wife and found employment in General Hooker's headquarters camp. It became apparent that Dabney knew the geography of the area very well, and, though he had little education, was clever. He quickly developed an interest in the Union flag-signal system, and he learned all he could about it.

After several weeks, Dabney's wife asked permission to return to Confederate lines as a personal servant to a Southern woman returning to her home. A few days after his wife's departure, Dabney began reporting Confederate movements to members of Hooker's staff. His reports soon proved accurate, and he was questioned as to the source of his intelligence.

Dabney explained that he and his wife had worked out a signaling system based on the laundry that she hung out to dry at her mistress's house, which was observable from Hooker's headquarters. As the wife observed Confederate troop movements, she would hang the laundry in a particular sequence to signal Dabney of the activity. For example, a white shirt represented Gen. A. P. Hill, a pair of pants hung upside down represented the direction west, and so forth. This system produced useful intelligence on Confederate movements until Hooker moved his headquarters.

While such a signaling system could produce simple messages such as "Hill-north-three regiments," the value of the information would not be great. Union cavalry pickets and Signal Corps observers would have provided similar intelligence. But the fact that this story is repeated in numerous articles and books makes it a part of the legend of intelligence activities during the war.

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