My copy of Martin's military records states:
TRAIL, Martin S Age 30 Height 6'3" fair complexion, blue eyes, light hair Occupation farmer. Pvt Co G-L !st Missouri Engineers, resident of Cole County MO. Enlisted 5/23/1863 in Harlem MO Buried Sec 45, Plot 1146 Jefferson Barracks.(Harlem is a neighborhood in Kansas City)