Statistics for occurrence #1 of “U. S. A.” in chapter 1.7, section c.1.7.16, page 78 of Southern Historical Society Papers, Volume 25.:

...of mine had been sprung, Pegram's battery of four guns was blown up, and about 278 sleeping soldiers were buried beneath the upturned earth. Immediately the leading columns of the Ninth Army Corps, U. S. A. , commanded by Colonel E. G. Marshall and Brigadier-General W. F. Bartlett, pressed forward and occupied the Crater and the earthworks for a distance on either side. Two hundred cannons roared in ...
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