Statistics for occurrence #1 of “Colonel Post” in chapter 15 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.:

...was stronger than the first. It was past noon before Thomas was ready to repeat the tactics of the preceding day. On the Confederate right was Overton's Hill, a strongly fortified position. Colonel Post was designated to lead the Federal attack. Supported by a brigade of negro troops, the assaulting columns moved up the steep ascent. With precision the lines marched toward the crest of the hill....
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