Statistics for occurrence #1 of “Lieutenant Colonel E. Porter Alexander” in chapter 1.26 of Southern Historical Society Papers, Volume 35.:

...en became Adjutant General of the Army of Northern Virginia, which position he held until the surrender, April 9, 1865. The Chiefs of Departments who served under General Lee were as follows: Lieutenant Colonel E. Porter Alexander , Chief of Ordnance, June 1, 1862, to November, 1862, Brigadier General Artillery to April 9, 1865. Lieutenant Colonel Briscoe G. Baldwin, Chief of Ordnance, November, 1862, to April 9, 1865. ...
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