"Following Beauregard's bombardment in 1861, Confederate forces occupied Fort Sumter and used it to marshal a defense of Charleston Harbor. Once it was completed and better armed, Fort Sumter allowed the Confederates to create a valuable hole in the Union blockade of the Atlantic seaboard."
"Major Robert Anderson...was forced to surrender it to Southern forces and returned to the North disappointed that he had not been able to postpone a civil war." because his troops were running out of supplies. They were on the verge of starving.