Statistics for occurrence #1 of “Northern Virginia” in chapter 1.2 of Southern Historical Society Papers, Volume 5.:

...sed of six batteries of the First corps; all the artillery of that corps being under my command, as chief of artillery, corn manding. On the 20th June, 1862, General Order No. 28, right wing Army Northern Virginia , I was announced as follows: Colonel J. B. Walton, of the battalion Washington Artillery, having reported for duty with this command, he is announced as Chief of Artillery. He will be obeyed ...
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