A corporal of the infantry of the Union Army. Complete with chevrons, color-accurate branch stripes, and pinned slouch hat. At the time, NCOs may also have used a kepi or forage cap.
Unlike other branches, units of cavalry tended to prefer the shorter cut shell jacket, as it was more easily worn on horseback. Shell jackets did not typically have cuff piping, but NCOs and officers often had sleeves tailored as an exception.