How old are the soldiers in the Civil War?

Most of the soldiers in the Civil War were 18 to 35 years. Some soldiers as young as 12 and 13 participated in the war. Men as old as about 45 were welcomed into the Army. Many of the generals and colonels were much older. Robert E Lee was 58 at the end of the war. General Winfield Scott was 75 years old when he resigned early in the Civil War.