Came across a picture of Battery F/3rd South Carolina Artillery Battery aka Palmetto Light Artillery
Several clues to possible Identites?
A junior officer-but no visible insignia?
A Sgt-clue-stands about 6 feet tall {estimate}?
A young color bearer-about 12 to 15?
One cannoner wears a 1839 US Army forage cap-possible prior service in US Army 1839/1840?