Statistics for occurrence #1 of “Captain Flint” in year 1863, month April, day 1 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...valry, when a sharp fight ensued. The rebels took up a position behind a fence which the Union cavalry could not get over, and from which they were unable to dislodge the rebels. During the fight Captain Flint , of the First Vermont cavalry, and a lieutenant of the same regiment, were severely wounded.
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† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.