■1st Regiment, Massachusetts Infantry

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Organized at Camp Brigham, Reedville, and duty there till December 25, 1861. Companies "A," "B," "C" and "D" left State for Annapolis, Md., December 25, 1861; thence moved to Hilton Head, S. C., February, 1862, and join Regiment. Second Battalion left State for New York December 27, and Third Battalion December 29 for same point; thence sailed for Hilton Head, S. C., January 13, arriving January 20, 1862. Attached to Department of the South to April, 1862. 3rd Brigade, 1st Division, Dept. of the South, to August, 1862. Companies "A" to "H" moved to Fort Monroe August 19, 1862; thence to Washington, D. C., and join Pleasanton's Cavalry, Army of the Potomac, at Tenallytown, September 3. Attached to Pleasanton's Cavalry, Army of the Potomac, to October, 1862. Averill's Brigade, Cavalry Division, Army of the Potomac, to January, 1863. 1st Brigade, 2nd Division, Cavalry Corps, Army of the Potomac, to April, 1865. (4 new Companies, "I," "K," "L," "M," organized December 5, 1863, to January 14, 1864.) Provost Marshal's Command, Army of the Potomac, to May, 1865. Headquarters, Army of the Potomac, to June, 1865. Mustered out June 29, 1865, and discharged at Readville, Mass., July 24, 1865.