Note 3 — Chapter XII · REVIEW OF THE VALLEY CAMPAIGN
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The blacks, however, appear to have been as unreliable as regards numbers as McClellan’s detectives. “If a negro were asked how many Confederates he had seen at a certain point, his answer was very likely to be: ‘I dunno, Massa, but I guess about a million.’”—McClellan’s Own Story, p. 254.