Statistics for occurrence #1 of “Captain Hillyer” in chapter 4.10 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 1: The Opening Battles.:

...ecure the advantage in this outlying arena of the war. Captain Rawlins was made Assistant Adjutant-General by Grant, and lifted from his shoulders much of the routine of the post. Captain Lagow and Captain Hillyer were two of the General's aides-de-camp. Dr. James Simons was Medical Director of the District. battle, but its effect on the North was most stimulating, and the people first lear...
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