No sooner had the armies, east and west, penetrated Virginia and Tennessee than fugitive slaves appeared within their lines. They came at night, when the flickering camp fires of the blue hosts shone like vast unsteady stars along the black horizon: old men, and thin, with gray and tufted hair; women with frightened eyes, dragging whimpering, hungry children; men and girls, stalwart and gaunt,--a horde of starving vagabonds, homeless, helpless, and pitiable in their dark distress. Two methods of treating these newcomers seemed equally logical to opposite sorts of minds. Said some, "We have nothing to do with slaves." "Hereafter," commanded Halleck, "no slaves should be allowed to come into your lines at all; if any come without your knowledge, when owners call for them, deliver them." But others said, "We take grain and fowl; why not slaves?" Whereupon Fremont, as early as August, 1861, declared the slaves of Missouri rebels free. Such radical action was quickly countermanded, but at the same time the opposite policy could not be enforced; some of the black refugees declared themselves freemen, others showed their masters had deserted them, and still others were captured with forts and plantations. Evidently, too, slaves were a source of strength to the Confederacy, and were being used as laborers and producers. "They constitute a military resource," wrote the Secretary of War, late in 1861; "and being such, that they should not be turned over to the enemy is too plain to discuss." So the tone of the army chiefs changed, Congress forbade the rendition of fugitives, and Butler's "contrabands" were welcomed as military laborers. This complicated rather than solved the problem; for now the scattering fugitives became a steady stream, which flowed faster as the armies marched. Then the long-headed man, with care-chiseled face, who sat in the White House, saw the inevitable, and emancipated the slaves of rebels on New Year's, 1863. A month later Congress called earnestly for the Negro soldiers whom the act of July, 1862, had half grudgingly allowed to enlist. Thus the barriers were leveled, and the deed was done. The stream of fugitives swelled to a flood, and anxious officers kept inquiring: "What must be done with slaves arriving almost daily? Am I to find food and shelter for women and children?"