This medical hat and shoulder straps are identified as belonging to Lieutenant Henry Augustus Dubois. The hat is a forage cap with a “McDowell” brim; the inside of the shoulder straps are green, denoting the medical department, and trimmed in gold piping with gold lieutenant’s bars and “M S” in the center.
Officers assigned to the medical service often wore green shoulder straps and sashes, while enlisted men wore green chevrons to denote the medical service.
Henry Augustus Dubois served with the Army of the Potomac during the Civil War, but was transferred to the District of New Mexico, Department of the Missouri in May 1866 and served at Forts Union and Sumner, New Mexico. He resigned from the army in 1868 and died in 1897 in San Rafael, Colorado.
Images Courtesy Wilson’s Creek National Battlefield; WICR 30615 & 30616