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:

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First Lieutenant, 50th Infantry, M. V. M., in service of the U. S. , Sept. 19, 1862. Mustered out, Aug. 24, 1863. First Lieutenant, Adjutant, 59th Mass. Infantry, Nov. 19, 1863. Major, Aug. 4, 1864; not mustered. Died of wounds received in action at Weldon Rail...
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