Statistics for occurrence #1 of “Col. D. R. Clendenin” in year 1863, month May of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...e only fired at a two-gun water-battery. The Eleventh battery of Massachusetts volunteers, returned to Boston from the seat of war. The Eighth Illinois cavalry, under the command of Col. D. R. Clendenin , returned to the headquarters of the army of the Potomac, after a raid along the banks of the Rappahannock and Potomac Rivers below Fredericksburgh, Va. The regiment were on the scout for eleven days...
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