A now deceased friend, with whom I traveled Western Arkansas on business in the 1980s-90s, was a student of history as well as a great jokester...one of his tongue-in-cheek comments was that all Confederate grave stones were pointed on the top so no damnyankee could sit on his grave and gloat that another rebel was under the sod!

I always thought it probably was a better story than whatever the real fact basis of the different design might be.