[Bull Snipe]

Then why didn’t the Charleston batteries fire on the massive invasion armada that Lincoln sent to seize Charleston?

[FLT-bird]

Then why didn’t the Charleston batteries fire on the massive invasion armada that Lincoln sent to seize Charleston? They had fired on an invader before - namely, the star of the west. This time they opted to evict the squatters after the squatters turned their guns toward the city of Charleston.