At this point I guess you are ready to change the topic to anything that is unrelated to the Battle Hymn of the Republic and Lincoln's valorous war.
I would disagree. You claim that the North was the aggressor because it invaded the South. But having started the war, only the South was responsible for keeping enemy forces out of their territory. So to say the North was the aggressor for invading the South when the South started the war in the first place is, to me at least, as ridiculous as saying the U.S. was the aggressor in World War II for invading Germany when Germany started the war to begin with.