Great photos. I've always wanted to go see this battlefield. I had an ancestor in Company H, 17 Mississippi Regiment. The tactics of the battle seem quite interesting. Did you take any more photos of markers that show position of the companies of the 17th Mississippi? I have a book of maps but I wanted to see a clear image of the markers.
Another interesting fact about Ball's Bluff is that this battle resulted in the formation of the Congressional Committee on the Conduct of the War lead by Gooch and Wade. They were investigating why the Union lost and how a Congressman/General was killed. This is the same Committee who investigated the Battle of Fort Pillow. There were so many similarities in the two battles. However the Committee performed the investigation of Fort Pillow to find a way to lay blame on the Confederates and help get Lincoln re-elected. Funny how the goal of their investigation changed in 2 years.