Good clean example of a pattern rarely encountered. Brass hilt with remnants of gold to the base ferrule Wire wrapped ray skin grip. 32” curved broad fullered blade with eagle, US, and military  trophies among foliage both sides.  Original bullion sword knot lacks it terminal. Plated scabbard with some wear but excellent and undamaged. See The American Sword, Peterson, #109 which example is devoid of the blade decoration seen here. Mounted Artillery or Horse Artillery were specialized units able to provide highly mobile artillery support, particularly to cavalry. As battlefield circumstances demanded, they could quickly position, ready and fire their cannons then assembly and relocate, often before enemy cannons could set up and return fire.