Horse artillery
Horse artillery was a type of light, fast-moving, and fast-firing field artillery that consisted of light cannons or howitzers attached to light but sturdy two-wheeled carriages called caissons or limbers, with the individual crewmen riding on horses. This was in contrast to other forms of field artillery which may also be horse-drawn but were heavier and whose gunners either marched on foot or were transported seated on the gun carriage, wagons or limbers.