I previously posted a photo taken in 1865 showing the "seawall" below the battered brick walls of Fort Sumter SC, littered with dud artillery shells, fragments of exploded ones, and a large cannon which fell from its emplacement at the top of the fort's walls. Here's another from the same time-period, showing just how completely the years-long yankee Heavy-Caliber Artillery bombardment of the fort's brick walls reduced them to ruins. This photo was taken by Confederate photographer George S. Cook. We can be sure about that, because the flag flying at the left of the fort is the 2nd Confederate National flag.
Be sure to click on the photo to enlarge it, then click again to super-enlarge it.
