Your ignoring the fact he had to have a reason, a tangible threat to move to Fort Sumter. The president even said he had no authority to move without that fact. Ignoring this points in his orders is not going to make his actions correct then or today. He was wrong to do what he did. His actions were not that of a West Point officer, his only justification was fear, which is not a virtue of an regular army officer, especiallly a West Pointer.

[December 31, 1860] {To Col. S. Cooper From Maj. Robert Anderson}

"The more I reflect upon the matter the stronger are my convictions that I was right in coming here. Whilst we were at Fort Moultrie our safety depended on their forbearance. A false telegram might, any night, have been seized upon as an excuse for taking this place, and then we would have been in their power."

This does not sound like an officer who acted out of a tangible threat, he is actually trying to justify his move after the fact. His actions caused the mobilization of the South Carolina militia and the siege upon himself.

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David Upton