We have permission from the Forest Service to include a few pieces of artillery in Banks' Grand Retreat. I'm presently in talks with one battery but their commitment is not a certain-sure thing. Guns need to be horse-drawn and gunners need to be up the efforts required of the rest of us hoofing it on the ground.
Any takers can contact me directly at email@example.com
We should be able to offer a stipend to help off-set the expenses of bringing the piece and animals to the event.