Charles B. Sweet was a private in Dunham's Company, Florida Light Artillery (Milton Light Artillery).
Milton Light Artillery was organized in November, 1861, at Apalachicola, Florida. The unit fought at St. Johns Bluff and in several engagements around Jacksonville. During the summer of 1863 it was divided; Company A fought at Lake City, Cedar Run, and Milton, and Company B at Olustee, Horse Landing, and Gainesville. Assigned to the Department of South Carolina, Georgia, and Florida, it was included in the surrender on May 10, 1865. Its captains were Henry F. Abell and Joseph L. Dunham.