Statistics for occurrence #1 of “General B. F. Butler” in part 1.2, chapter 1.3 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 2: Two Years of Grim War.:

... Virginia Negroes following Pope's soldiers in their retreat from Cedar Mountain. From the beginning of the war Negroes had been a subject of debate. Even before Bull Run, on May 26, 1861, General B. F. Butler had declared that all fugitive slaves would be considered as contraband of war. Congress, however, decided in August that all slaves confiscated should be held subject to the decision of the United S...
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