There was a general shakeup of Florida artillery units still in Florida around late 1863. If my memory serves me correctly, basically Robert H. Gamble's Leon Florida Artillery was essentially split in two, with one company coming to be known as Dykes and the other company being known as the Kilcrease Light Artillery. My great grandmother White's first husband, James M. Carter, who served in the 5th Florida Infantry Regiment, had a brother, Henry C. Carter, who served in Gamble's and ended up as artificer in the Kilcrease Light Artillery. But my 2-great grandfather John Shepard Haven had a son named Greenberry Haven who joined Gamble's at age 14, and when this split occurred he popped out of both of the new companies and landed in Charles Geddes Campbell's Independent Company of Georgia Siege Artillery, which garrisoned Confederate Fort Ward (a rebuild of the Spanish fort San Marcos de Apalachee), at St. Marks, Florida. Campbell had commanded Co. D of the 17th Georgia Infantry Regiment in Benning's Brigade, till he developed apoplexy and felt obliged to resign as an Infanry officer. Simultaneously with his resignation he requested to be commissioned an officer either of Cavalry or Artillery (so he could ride a horse), and he was commissioned a captain of artillery and assigned to this independent command. Campbell's unit used guns that had been removed from Fort Marion (Fort San Marcos in St. Augustine). ALL of these relatives of mine were from Decatur and Thomas Counties, in Georgia, and lived there at that time... though Herring Carter, Henry C. Carter's father, had lived briefly in Leon County, Florida. The Havens, father and son, both eventually moved to Jackson County, Florida. Greenberry had owned and operated several mills in Madison County, Florida, and with his brother (John) Henry Haven, founded the town of Lee (named after Robert E. Lee) in Madison County. Greenberry Haven was a Justice of the Peace in both Madison and Jackson counties, and so far as I know probably owned and operated a sawmill in Jackson County, though I have no specific information on that. HOWEVER, since the man in question later lived in Lee County... if he actually came from Lee County originally, I would strongly suspect that he was a "late enlistee" into Dykes Company, AFTER it was posted at Camp Sumter POW camp. Although Camp Sumter was located in Sumter County, Georgia, the location is within "spitting distance" of Lee County. You need to obtain and study in detail, his Compiled Confederate Service Record. Richard White Tallahassee, Florida