MCCLELLAN
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.
Union Major General John Pope put his forces in motion towards Manassas Junction and Centreville with the idea of placing his army between those of generals Jackson and Longstreet. Stonewall Jackson, however, eluded this operation by slipping under the cover of night to Groveton. This maneuver caused Pope to have no knowledge on Jackson's location.
Major General John Pope commanded the Federal Army of Virginia at the Second Battle of Manassas August 28-30, 1862.
Prior to the actual battle of the Second Bull Run, it was important for the Confederacy to do its best to keep the Union army out of balance. One way was the actions of General Stonewall Jackson just prior to the beginning of this key battle. To keep the union off balance, Jackson raided the Federal supply depot at Manassas Junction on August 26, 1862.
Battle of Bull Run. Depended what side the army was on in how it was called. Bull Run was the river and the Union called it "Bull Run" . The South called it Manassas. That is why in history books you will see both names for the same battle.
The Union Army under General Irving McDowell was the attacking army at the First Battle of Bull Run also known as Manassas.
Confederate General Robert E. Lee was once described by General George B. McClellan as being "timid, perhaps weak". That was never the case with Lee. On the 24th of August, Lee devises a bold plan to destroy Pope's army at the Second Bull Run. Lee gives General Stonewall Jackson half of his infantry and calvary for the purpose of moving behind the screen of Bull Run Mountain. The plan is designed to go around Pope's flank and come in from behind and seize Pope's supply base at Manassas Junction. On August 26, Jackson's calvary strikes through Bull Run Gap and captures the rail junction at Manassas. This cuts off Pope's line of communications from his base in Alexandria, Virginia. A day later, Pope's supply base at Manassas is captured. At this point, Pope's army is in grave danger.
General McDowell was the first commanding officer of the Union's Army of the Potomac. Under him the Army lost it's first major battle, the battle of Manassas or Bull Run. He was quickly replaced with General George B. McClellan.
Union: Major General John PopeConfederate: General Robert E. Lee, Major General Thomas J. Jackson, and Lieutenant General James Longstreet
The commander of the Union Army at First Bull Run (First Manassas) was Major General Irvin McDowell.
Although General Lee was unable to lure Union Major General John Pope into a premature battle with the Army of Northern Virginia in the Summer of 1862, Lee created a serious problem for the new Union general who had been called from the Western Theater to lead the Army of Virginia. General Lee directed the reliable Stonewall Jackson to a long march to raid the Army of Virginia's supply depot at Manassas Junction. Stonewall Jackson was successful in his raid on the Union depot. To add another misery to the Pope's situation, Jackson was also able to cut Pope's telegraphic communications to Washington DC.
Second Manassas, Seven Days, Chancellorsville…