Congress established the Ambulance Corps in 1862. General Orders 147 announced “the organization of the ambulance corps and the management of ambulance trains.” Three of the regulations appear below:
“13. Good serviceable horses will be used for the ambulances and transport carts, and will not be taken for any other purpose except by orders from these headquarters.
“14. The uniform for this corps is: For privates, a green band 2 inches broad around the cap, a green half chevron 2 inches broad on each arm above the elbow, and to armed with revolvers; non-commissioned officers to wear the same band around the cap as a private, chevrons 2 inches broad and green, with the point toward the should on each arm above the elbow.
“15. No person will be allowed to carry from the field any wounded or sick except this corps.”