Statistics for occurrence #1 of “U. S. A.” in entry army of Harper's Encyclopedia of United States History:

...l. Robert P. Hughes, Inspector-General, U. S. A. (Brigadier-General, U. S. V.). Col. George M. Randall, 8th Infantry, U. S. A. (Brigadier-General, U. S. V.). Maj. William A. Kobbe, 3d Artillery, U. S. A. (Brigadier-General, U. S. V.). Brig.-Gen. Frederick D. Grant, U. S. V. Capt. J. Franklin Bell, 7th Cavalry, U. S. A. (Brigadier-General, U. S. V.). On the morning after the affair at Lexi...
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