Beauregard was born in St. Bernard Parish, Louisiana about 20 miles outside New Orleans. Beauregard attended New Orleans private schools and then went to a french school in New York City. During his first 4 years in New York City at the age of 12 when he started speaking the language of English as French being his first language. He was trained at the United States Military Academy at New York. Beauregard dropped the hyphen from his surname and treated Toutant as a middle name to fit in with his classmates. He graduated second in his class in 1838 as an artilleryman and military engineer. During the Mexican-American War Beauregard served as an engineer. He was American military officer, politician, inventor, writer, civil servant, and the first prominent general of the Confederate States Army during the American Civil War.
Beauregard served as a Confederate general during the civil war, and then he was placed in command of the defenses of Charleston, South Carolina. In this role he ordered first shots of the Civil War during the bombardment of Fort Sumter. After his success in taking Fort Sumter, Beauregard served as a second in command during the Confederate victory at the first battle of Bull Run. He was then promoted to full general, during this time he began the first of many arguments over field tactics, especially over the things he saw about the President Jefferson Davis mistakes. At the Battle of Shiloh in April 1862, Beauregard took command of the Confederate forces after Johnson was killed.
Beauregard was best known as the General for the Confederate States of America during the American Civil War. He was given responsibility of taking over the Fort Sumter and led Confederate forces to victory in the First battle of Manassas, and successfully defended Charleston from repeated Union attacks. Beauregard and his commander, General Joseph E. Johnston, convinced Davis and the remaining cabinet members that the war needed to end. H eventually became one of the eight full generals of the Confederacy and participated in almost every important theatre of the war. He proved to be capable of combat commander.