The Confederate general that led the bombardment of Fort Sumter was PT Beauregard. As an aside, the fort's commander, Major Anderson had been one of Beauregard's favorite instructor at West Point.
You might want to break that down by state since there were approx 700,000 casualties in the Civil War. If you google search on a state + civil war (like Minnesota Civil War) you will find a listing of those who fought and died in the war. The Fed sites just take too long to drill down into to get the info you want, picking a state would make your search easier.
The common soldiers are always predominantly from the lower economic classes. That could be because the population is predominantly in the lower and middle income classes. Remember, only 1/10 of the population can be in the upper 10 percent and half of the population will be in the lower 50 percent.
The conflict between the Confederacy and the United States began in the harbor of Charleston, South Carolina. There Southern forces used cannon fire on the US Fort Sumter and forced its commander to surrender. This conflict led to the US Civil War. The Confederacy passed an act in May of 1861, declaring a state of war existed between itself & the United States. Lincoln and others in the North continued to call this a rebellion until July, 1861. This date was noted by the US Supreme Court as the beginning of the war.
The battle received its name based on the location at which it took place. Vaught's Hill is an area in Rutherford County, Tennessee. The battle took place on the 20th of March, 1863.