The bombardment of the beleaguered U.S. garrison atFort Sumter in Charleston Harbor on April 12, 1861 is normally reckoned as the first military engagement of the war.
South Carolina was a source of troops for the Confederate army, and as the war progressed, also for the Union, thousands of ex-slaves joined the Union forces.
The state also provided uniforms, textiles, food, and war material, as well as trained soldiers and leaders from The Citadel and other military schools.
In contrast to most other Confederate states, South Carolina had a well-developed rail network linking all of its major cities without a break of gauge which was a major strong point for them.
Relatively free from Union occupation until the very end of the war, South Carolina were forced to rejoin the Union after US Federal forces had won the war.