I am gathering, from the actions taken by the South, they figgered they had the might to do what they thought was right. It was not a peaceful, as in Ghandi's peaceful resistance, that they were planning. They were planning to resist at all cost. Those boys figgered what was coming, as in, not surprised.
If they were running a bluff, it was ill conceived.
If they thought it was going to be a peaceful split it was ill conceived.
If they thought there would be immediate foreign sympathy it was ill conceived.
If they thought the North was afraid to take up arms to preserve the union it was ill conceived.
I am not saying that those boys were "BAD". The way I see it, looking back, and in all honesty, looking forward from their time in space, this war was inevitable, if they made a split.
This thing would have come to a head pretty soon. The South, I believe, would have made a play for several border states and territories as well as some parts of the west. I think the North saw this, realized this and if you had been there so would you. I believe that you, judging from your background that you have revealed, would have suggested to the leadership in the north to take the offensive and put down this rebellion as soon as possible. The North thought it was going to be a walk in the park. War would be over by the end of the summer--and that was a sorry thought on their part.
The South made some terrible errors in judgement. The question that has been avoided IS, who was the South. The South was those people who had the most to gain, The landed, The banks, the rich. They had bigger and greedier plans than just secession.
Just as always, the greed of the rich killed off a generation of fine young boys. Boys that were lured into a war on the basis of pride, spirit, and nationalism--without seeing that they were fighting not for all this but just a few.
Blessings