As a visual aid to my comment at #27, here is Hunt’s placement and sighting for the Union Cannons on the day of Pickett’s charge. The 2 Parrott cannons on Little Round Top are at the bottom, able to provide devastating crossfire. As if he had not covered all the rest of the field. If the fuses on Lee’s cannons had worked properly, Hunt’s plan might not have come to fruition.

Union Cannons on July 3