Thanks - I had never heard of the term “War of 1861”. Found the above link - has some interesting information of the debate going on when they were writing the Constitution. Some were for allowing secession, some were against it. (It ended up being allowed).
Although the name lacks the importance and vastness of the war. Perhaps “The Great War of 1861”. Of course then they would have come up for a different name originally given to WW I!
Wow, I feel awesome because I came up with the term first. However, Walter E. Williams has my permission to use it any time he wants.