Statistics for occurrence #1 of “U. S.” in chapter 4, page 367 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 2:

.... 10, 1864. Mustered out, Aug. 1, 1864. Second Lieutenant, 38th Mass. Infantry, Mar. 8, 1863. Resigned, Jan. 24, 1864. First Lieutenant, 3d Infantry, M. V. M., in service of the U. S. , Apr. 23, 1861. Mustered out, July 22, 1861. Second Lieutenant, 6th Infantry, M. V. M., in service of the U. S., May 21, 1861. Mustered out, Apr. 2, 1861. Captain, 21st Mass. Infantry,...
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