[Gondring]

Nope.

I'm talking about places where US troops were sitting on property of others, such as Ft. Sumter, etc., and refused to leave.

Recall, they were SOVEREIGN states.

[Non-Sequitur]

I'm talking about places where US troops were sitting on property of others, such as Ft. Sumter, etc., and refused to leave.

Fort Sumter was the property of the U.S. government, built on land deeded to the government free and clear by the legislature of South Carolina. It did not belong to anyone but the federal government, so what do you base your claim that the "US troops were sitting on property of others" on?