The Citadel and the Southern Military Academy, Charleston, S.C., the remains of the concrete wall built in the time of the Revolution, and 600 pound Blakely Solid Shot in the foreground

The 15 in. gun at Fortress Monroe, Va. Weight 50,000 lbs, and carries a ball 475 lbs. weight from 4 to 5 miles

The 15 in. gun at Fortress Monroe, Va. Weight 50,000 lbs, and carries a ball 475 lbs. weight from 4 to 5 miles

Mortar gun the Federal forces of Sherman's Army found, Ft. McAllister, Ga.