Horace Greeley, The American Conflict: A History of the Great Rebellion in the United States of America, 1860-65: its Causes, Incidents, and Results: Intended to exhibit especially its moral and political phases with the drift and progress of American opinion respecting human slavery from 1776 to the close of the War for the Union. Volume II.

The position of Hooker's and Ewell's forces in their engagement on the 27th, near Bristow, is shown; while the position of the commands of McDowell and Sigel, at Gainesville, and Reno and Kearny, at Greenwich, as held that night, are also shown, being indicated by the respective initials, viz.:

The positions of Gens. McDowell and Sigel were somewhat farther advanced toward Centerville, at the time of their collision with Jackson's advance on the 28th.

A, B, C, represent the lines formed by the commands of Heintzelman, Sigel, and Reynolds, afterward reenforced by McDowell and Reno, and confronted by Jackson (a, b, c), who was afterward reenforced by Longstreet, Aug. 29.

The same position substantially, but extending farther to the left, was held on the 30th, by Heintzelman, Reno, Porter, Sigel, and Reynolds (named in order from right to left), supported by McDowell.

No attempt is made to represent the changes of position which occurred during the two days of severe fighting.

The position of the several commands at Centerville on the 31st August, and near Germantown on the 1st September, are indicated by initials, where the full name does not occur, viz.: