However, he's better known for his command during the First Battle of Bull Run and two other maneuvers.  
The author of Principles and Maxims of the Art of War, like many of the Confederates he was a West Point graduate and a veteran of the Mexican War.  After the war he returned to his native Louisiana where he directed the state lottery for several years.  During the final stages of the war, he had defended the southern approaches to Richmond and conducted the defense of Charleston.  However, he's better known for his command during the First Battle of Bull Run and two other maneuvers.  FTP, name this man who organized the Confederate retreat at Shiloh and led the forces that fired upon Fort Sumter.
The author of Principles and Maxims of the Art of War, like many of the Confederates he was a West Point graduate and a veteran of the Mexican War.  
Pierre Gustave Toutant Beauregard