Statistics for occurrence #1 of “Maj. J. H. Rion” in chapter 1.10 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4.:

...erro: 32d Ga., Col. George P. Harrison, Jr.; 31st N. C., Lieut.-Col. C. W. Knight; 51st N. C., Col. Hector McKethan; Charleston (S. C.) Battalion, Lieut.-Col. P. C. Gaillard (w); 7th S. C. Battalion, Maj. J. H. Rion . Artillery, Lieut.-Col. J. C. Simkins (k): 63d Ga. (2 co's), Capts. J. T. Buckner and W. J. Dixon; 1st S. C. (2 co's), Capts. W. T. Tatom (k) and Warren Adams; S. C. Battery, Capt. W. L. De Pass. ...
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