George McLellan
The Confederates won The Battle of Bull Run because the Union plan was too complicated and General Burnside's army could not get a move on. With a little over half of the Union Army involved in the fighting and the center of the Union Army basically uninvolved, The Confederate army could regroup and attack one army at a time. The Confederate Army did not need to be larger than the entire Union Army. It only needed to be larger than the part that was attacking.
Second Battle of Bull Run
The First Battle of Bull Run, also known as the First Battle of Manassas (the name used by Confederate forces and still often used in the Southern United States), was the first major land battle of the American Civil War, fought on July 21, 1861, near Manassas, Virginia. Unseasoned Union Army troops under Brig. Gen. Irvin McDowell advanced across Bull Run against the equally unseasoned Confederate Army under Brig. Gens. Joseph E. Johnston and P.G.T. Beauregard, and despite the Union's early successes, they were routed and forced to retreat back to Washington, D.C.
The Battle Of Gettysburg resulted in a Union (US) victory over the Rebels (CSA)
President Lincoln was deeply disappointed with the Union defeat at the first major battle of the US Civil War. He realized that prompt and decisive action was necessary. He called upon Major General George B. McClellan to form and train a new Union army in Washington DC.
The Confederates (The South) won both the battles of Bull Run (or Manassas, as the South likes to call them.)The first was won by Joseph E. Johnston and P.G.T. Beauregard, over the Union commander Irvin McDowell.The second was won by Robert E. Lee and T.J. ("Stonewall") Jackson, over the Union commander John Pope.The Confederates - both times.
The Union army suffered over 2,100 combat deaths at Antietam.
The day after the Rebels won the Second Battle of Bull Run on August 30, 1862, Union General John Pope's disorganized army rests at Centerville, Virginia. Lee sees a chance to destroy Pope's army by sending Stonewall Jackson and JEB Stuart to cross the Bull Stream and attack pope's exposed flank. The Rebel attack fails and the Battle of Chantilly is a small Union victory. Pope then begins marching his army to Washington DC.
There were two battles of Bull Run in the US Civil War. The first one took place on July 21, 1861. Confederate leader Stonewall Jackson won over Union general McDowell. The Union was so sure of victory that a victory party was scheduled in Alexandria, Va. Jackson was promoted to Major General for the win. The second battle of Bull Run was fought on August 29 to September 1, 1862. This time Confederate general Jackson won the battle over his opponent, Union general Pope.
There were two battles of Bull Run in the US Civil War. The first one took place on July 21, 1861. Confederate leader Stonewall Jackson won over Union general McDowell. The Union was so sure of victory that a victory party was scheduled in Alexandria, Va. Jackson was promoted to Major General for the win. The second battle of Bull Run was fought on August 29 to September 1, 1862. This time Confederate general Jackson won the battle over his opponent, Union general Pope.
Major General George B. McClellan replaced Brigadier General Irvin McDowell as commander of the Army of Northeastern Virginia on July 26th, 1861. This army was to eventually become the Army of the Potomac.
When the Union Army was defeated by the Confederate Army the thought of a quick war was quickly dispelled by all, because the "Rebels" had defeated the all mighty Union. People thought that the war would be over in 2 months, but the fact that the Confederate stood up for themselves and defeated a much larger, and more powerful army showed that they weren't going down without a fight.