Fort Johnson seized
South Carolina troops took possession of Fort Johnson on James Island, the last of the harbor works still nominally federal apart from Sumter itself. Long derelict, it mattered for its position: from Fort Johnson a gun bore squarely on Fort Sumter’s gorge, and it was from a mortar here that the signal shell of 12 April was fired. Fort Sumter →
Official Records, Series I, Vol. 1