The Union commander for the Second Battle of Bull Run (referred to as the Second Battle of Manassas in the South) was Major General John Pope.
The Union commander was General McDowell. The Confederate commander was General Beuregard.
First Bull Run - Irvin McDowell Second Bull Run - John Pope
First Bull Run - Irvin McDowell Second Bull Run - John Pope
George McLellan
To appoint George McClellan as commander of the Army of the Potomac.
Lincoln was the US President, directing the Union armies. These armies lost both the Battles of Bull Run.
"stonewall" Jackson
On the field it was Irwin McDowell.
William "Bull" Halsey was the US commander of the South Pacific Area in the early stages of the Pacific War against Japan and was later the commander of the Third Fleet.
Robert E. Lee
Brigadier General Irvin McDowell