Longstreet was one of Gen. Robert E. Lee 's best corps commanders in the East in the Army of Northern Virginia .
He was unsuccessful in his role as an independent commander in the West and accomplished little in the Knoxville Campaign .
Although Longstreet was one of Gen. Robert E. Lee 's best corps commanders in the East in the Army of Northern Virginia , he was unsuccessful in his role as an independent commander in the West and accomplished little in the Knoxville Campaign .