Gfryesc, I responded to your point and you decided to change the subject to events a decade later. Also, you appear to never have heard of the War with Mexico.
Great article. As for gfryesc, I don't know what the particular battle cry of each regiment of the 150,000 black Union soldiers was, but The song of the 54th Mass. Included the line "give us a flag, all free without a slave". Among white soldiers, The Battle Hymn of the Republic was immensely popular and was sung on the march into battle. It includes many references to ending slavery including "As he died to make men holy let us die to make men free".
Re: “Mary C. Simms Oliphant's troubling history of South Carolina”
In 1860 the average South Carolinian was a slave.