Statistics for occurrence #1 of “Gen. Burnside” in year 1861, month November, day 13 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...rivate arms and call ten thousand men into service. The Eleventh regiment Maine Volunteers, under command of Colonel Caldwell, passed through Boston to-day, en route for Annapolis, Md., to join Gen. Burnside 's brigade. They were accompanied by one hundred and ten men, sharpshooters, commanded by Capt. James D. Fessenden, (a son of Senator Fessenden,) and one hundred recruits for the Fourth Maine regime...
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