The first shots of the Civil War were fired at Fort Sumter on April 12, 1861.
One of the first major battle of the Civil War was the first battle of bull run fought on July 21, 1861.
The second major battle of the Civil War was the battle of Shiloh it was fought in the woodlands of western Tennessee.
The third major battle of the Civil War was the battle of Antienam which was won by the union and fought at Antienam creek.
The most deadly and major battle was the battle of Gettysburg it is known as the most deadly battle ever fought on american soil.
It was the end of the war or very close to it and William T Sherman marched through the South burning and basically destroying it eventually the south surrendered because of how bad the damage was on their side.