Those of fresh or remote scottish ancestry were arriving in America and settling the south from 1700 until the late 1800's, including Ulster scots (the Scots-Irish----formerly predominantly lowland scots purposely emigrated by the English in teh late 1600s to colonize Northern Ireland), lowland and highland scots in various waves driven by various religious, social, and economic forces both before and after the Civil War. Most who arrived before around 1830 settled predominantly in the south and their kin became the backbone of the Confederate Military machine, while those that arrived later did so more in the North as labor in the industirally progressive regions there. Most of them were NOT Ulster Scots but rather first generation highland and to a lesser degree, lowland , scots driven off there lands and across an ocean to find prosperity here, and bringing with them their fresh highland traditions. That is why the Union had defined Highland units, as they were "fresh from the boat" scots so to speak, verses the long entrenched southern scots who no longer considered themselves scottish for the most part, rather brothers in arms against the tyranny of a federal govt bent on telling them how to run their lives (something I beleive scots of any type just in general don't take much of a liking to).