Bryce, this is from the NPS Site; I'm sure you have seen it, The 18th Batt was from Savannah, so maybe Chatham County would have info. Stan

This unit lost eighty-two percent of the 85 engaged at Sayler's Creek and surrendered 1 officer and 16 men of which 8 were colored musicians and cooks. Major William S. Basinger and John Screven were in command.