Here’s Eric Wittenberg giving a typically excellent presentation based on his writing about the cavalry in the Battle of Gettysburg. He dispells quite a few myths here, especially the myth that JEB Stuart was to attack the Union rear during Pickett’s Charge.
This is from the 2016 Conference on the Art of Command in the Civil War, held by the Mosby Heritage Area Association.
The video’s description reads, “Eric Wittenberg talked about the cavalry action on July 3rd at the 1863 Battle of Gettysburg. He described the fighting on East Cavalry Field and argued against the theory that Confederate Gen. J.E.B. Stuart had orders to try to get around the Union flank. Instead, he suggested that Stuart was supposed to protect the Confederate flank.”