I saw a most laughable spectacle this afternoon– viz., a negro, dressed in full Yankee uniform, with a rifle at full cock, leading along a barefooted white man, with whom he evidently changed clothes. General Longstreet stopped the pair, and asked the black man what it meant. He replied, “The two soldiers in charge of this here Yank have got drunk, so for fear he should escape I have took care of him, and brought him through that little town.” The consequential manner of the negro, and the supreme contempt with which he spoke to his prisoner, were most amusing. This little episode of a Southern slave leading a white Yankee soldier through a Northern village, alone and of his own accord, would not have been gratifying to an abolitionist. Nor would the sympathizers both in England and in the North feel encouraged if they could hear the language of detestation and contempt with which the numerous negroes with the Southern armies speak of their liberators.
Diary of Lieutenant Colonel Arthur James Lyon Fremantle, Three Months in the Southern States (1864), 6 July 1863, describing an incident during the retreat from the Battle of Gettysburg.