Statistics for occurrence #1 of “Colonel Henderson” in chapter 6, page 122 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 10: The Armies and the Leaders.:

...rd, which for large armies in a great battle is absolutely fair, Waterloo is eclipsed by Gettysburg; Gettysburg is eclipsed by Sharpsburg, and Sharpsburg eclipsed by Chickamauga. Here are some of Colonel Henderson 's percentages, which tell the story, the percentage of the Federal losses at Chickamauga being calculated from Henderson's figures. At Waterloo, the victors' loss was twenty per cent. At Gettysburg...
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