An ancestor fought in that war, died. Our family always claimed he was a Northerner but I did the research and learned he was a Southerner. No matter, all were brave young men. Happy Independence Day.
My mother’s family, descended from German-speakers from France who arrived in the middle of the 18th century fought on both sides during the Civil War.
My greatX3 grandfather and two of his brothers enlisted in an Illinois regiment when the war started but after their first major engagement apparently decided war was not their thing and all three deserted. On the other hand my greatX5 grandfather served through the Revolutionary War, making me eligible to join the Daughters of the American Revolution, except for being born male.
Mine was the mirror image; when I researched my family 40 years ago, I discovered that my ggrandfather from Arkansas fought for the North unlike what my father had been told, along with his little brother, while their two older brothers were Confederates.
A little known fact... roughly 1 in 10 Southerners fought for the Union.