Statistics for occurrence #1 of “Major-General McClernand” in chapter 4, page 46 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

... On the last attempt, however, when the troops had left the river and were moving against Pemberton, Grant's guns assumed their full importance. His army consisted of the Thirteenth Army Corps, Major-General McClernand ; the Fifteenth Army Corps, Major-General Sherman, and the Seventeenth Army Corps, Major-General McPherson, with an aggregate of sixty-one thousand men and one hundred and fifty-eight guns. The supe...
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