First time, Irvin McDowell.
Second time, John Pope.
The Union Commanding General on the field at Second Manassas was General John Pope.
The commanding Union officer was U.S. Grant.
MCCLELLAN
No, the South won both battle there.
The Stream of Bull Run was where the railroad was, known as Manassas Junction. Confederate forces wanted and did capture Union supply depot at Manassas Junction, threatening communications with Washington D.C. that was 25 miles away, by the Manassas Junction Railway. Manassas Junction had obvious strategic value. Anyone who controlled theses rail lines would be able to move troops and supplies into the heartland of the Confederacy and not too far from the beachhead on the Potomac River, for Union supply lines. Even though Confederates won two major wars at Manassas Junction, Manassas stayed with Union throughout America's Civil War. ***The Union also named their battles after geographic locations.
Schofield
George Meade
Grant-
It was called that by the Union Army because Bull Run Creek was nearby. It was called the Battle of Manassas by the Confederates because Manassas Junction, an important railroad junction was nearby.
No. The action at Manassas Junction was a preliminary to the Second Battle of Manassas (or Bull Run). The union won neither the First nor the Second Battles of Manassas, and were humiliated by the events at Manassas Junction, where Stonewall Jackson penetrated deep behind Union lines with his entire Corps, undetected, and captured a massive Union supply depot at the Junction. What materials his men could not immediately eat, or carry or wear away, were burned in a huge bonfire. Jackson's men reminisced for the rest of the war of the feast upon which they gorged themselves at Manassas Junction. A Yankee brigade sent to investigate the noises coming from the supply depot was easily smacked away. Jackson then departed the scene at his pleasure and disappeared, so far as the Yankees were able to determine.
U.S. Grant
Major Anderson