soldiers . Dagler said Jackson provided information about supply routes and military strategy . `` In Jackson 's case , what he did was ... present some of the current issues that were affecting the Confederacy that you could not read about in the local press that was being passed back and forth across local lines . He actually had some feel for the issues of supply problems , '' Dagler said . Jackson and other slaves ' heroic efforts have been a forgotten legacy of the war -- lost amid the nation 's racially charged past and the heaps of information about the war 's historic battles . But historians over the last few decades have been taking an interest in the sacrifice of African-Americans during those war years . Jackson 's espionage is mentioned in a letter from a general to Secretary of War Edwin Stanton . Maj. Gen. Irvin McDowell refers to `` Jeff Davis ' coachman '' as the source of information about Confederate deployments . Watch grandson of slaves : `` They call me Little Man '' '' Dagler said slaves who served as spies were able to collect incredibly detailed information , in large
WASHINGTON -LRB- CNN -RRB- -- William Jackson was a slave in the home of Confederate president Jefferson Davis during the Civil War . It turns out he was also a spy for the Union Army , providing key secrets to the North about the Confederacy . William Jackson , a slave , listened closely to Jefferson Davis ' conversations and leaked them to the North . Jackson was Davis ' house servant and personal coachman . He learned high-level details about Confederate battle plans and movements because Davis saw him as a `` piece of furniture '' -- not a human , according to Ken Dagler , author of `` Black Dispatches , '' which explores espionage by America 's slaves . `` Because of his role as a menial servant , he simply was ignored , '' Dagler said . `` So Jefferson Davis would hold conversations with military and Confederate civilian officials in his presence . '' Dagler has written extensively on the issue for the CIA 's Center for the Study of Intelligence . Watch the stories of slaves as spies '' In late 1861 , Jackson fled across enemy lines and was immediately debriefed by Union