Correct answer choice is :
Major Anderson was a United States Army officer during the American Civil War. He was the Union officer in the first battle of the American Civil War at Fort Sumter. The Confederates attacked the fortress and demanded its abandonment to start the war. Beauregard joined the Civil War as the Confederacy's first brigadier general and was put in charge of the defenses of Charleston, South Carolina. In this role, he directed the first shots of the Civil War during the shelling of Fort Sumter.
