I am conducting research on the evolution of Cavalry doctrine during the American Civil War. Despite having spent 24 years in the (Armored) cavalry and having survived a change of command ceremony in the 1st Cavalry Division (Thank God the horse knew what to do!) I know very little about horses. I would like to learn about the practical side of horse cavalry operations (e.g. load limits for horses, the effect of heat/muddy roads on horses, dietary requirements on campaign, sustained march speeds or any other information that would affect cavalry operations). I would be grateful for any assistance provided.