[Non-Sequitur]

That "Fort" was still SC state property not yet transfered to the Federal Government when "OCCUPIED" by union troops from Fort Moultrie.. I'd say the "Invasion " started there "

Try again. The federal government was building the fort, not the state of South Carolina. And it was built on land deeded to the government free and clear by the South Carolina legislature. It was, in every respect, the property of the federal government and the U.S. Army.

Link

[Robe]

I beg to differ.. although you are correct in that the State of South Carolina deeded the property to the Federal Government, it was NOT to take possession of the property until the construction was complete.
This can be ascertained by documents in the Confederate Relic Room in Columbia SC, as well as remarks (in writing)by Maj. Anderson himself questioning the legitimacy of move to Sumter