General P.G.T. Beauregard was General Albert Sydney Johnston's second in command in the northwest in the spring of 1862. He had trained in civil engineering at the U.S. Military Academy, and had served in the Spanish-American War.
Unfortunately, Pierre Gustave Toutant-Beauregard didn't get along with Jefferson Davis, or most of the other general very well, despite being the victor at the First Battle of Bull Run.
He became commander in the west at the death of Johnston.
After Grant won the west, Beauregard was credited with saving Petersburg, Virginia and Richmond, from invasion by the Union in the summer of 1864. His headquarters was here, two miles from Grant at Pittsburg Landing and 500 meters from Shiloh Church.