Statistics for occurrence #1 of “Colonel La Grange” in chapter 9 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 3: The Decisive Battles.:

...federate stronghold. Meanwhile, on the Dalton road there was a sharp cavalry fight, the Federal commander, General E. M. McCook, having encountered General Wheeler. McCook's advance brigade under Colonel La Grange was defeated and La Grange was made prisoner. Sherman's chief object in these demonstrations, it will be seen, was so to engage Johnston as to prevent his intercepting McPherson in the latter's m...
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