Confederate Civil War newspapers are much scarcer than Union Civil War newspapers and the demand for them is quite high. They generally do not have the large display headlines as seen in Union Civil War newspapers but their anti-Yankee editorial text and commentary are priceless. 

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 fought July 21, 1861, near Manassas, Virginia. It was the first major land battle of the American Civil War.

Just months after the start of the war at Fort Sumter, the Northern public clamored for a march against the Confederate capital of Richmond, Virginia, which could bring an early end to the war. Yielding to this political pressure, unseasoned Union Army troops under Brig. Gen. Irvin McDowell advanced across Bull Run against the equally unseasoned Confederate Army under Brig. Gen. P.G.T. Beauregard near Manassas Junction. McDowell's ambitious plan for a surprise flank attack against the Confederate left was not well executed by his inexperienced officers and men, but the Confederates, who had been planning to attack the Union left flank, found themselves at an initial disadvantage.

Confederate reinforcements under the command of Brig. Gen. Joseph E. Johnston arrived from the Shenandoah Valley by railroad and the course of the battle changed. A brigade of Virginians under a relatively unknown colonel from the Virginia Military Institute, Thomas J. Jackson, stood their ground and Jackson received his famous nickname, "Stonewall". The Confederates launched a strong counterattack and as the Union troops began withdrawing under pressure, many panicked and it turned into a rout as they frantically ran in the direction of nearby Washington, D.C. Both sides were sobered by the violence and casualties of the battle, and they realized that the war would potentially be much longer and bloodier than they had originally anticipated.

Union casualties were 460 killed, 1,124 wounded, and 1,312 missing or captured; Confederate casualties were 387 killed, 1,582 wounded, and 13 missing. Among the latter was Col. Francis S. Bartow, who was the first Confederate brigade commander to be killed in the Civil War. General Bee was mortally wounded and died the following day.

Union forces and civilians alike feared that Confederate forces would advance on Washington, D.C., with very little standing in their way. On July 24, Prof. Lowe ascended in Enterprise to observe the Confederates moving in and about Manassas Junction and Fairfax and ascertained that there was no evidence of massing Rebel forces, but he was forced to land in enemy territory. It was overnight before he was rescued and could report to headquarters. He reported that his observations "restored confidence" to the Union commanders.

The Northern public was shocked at the unexpected loss of their army in a battle for which an easy victory was widely anticipated. Both sides quickly came to realize that the war would be longer and more brutal than they had thought. On July 22 President Lincoln signed a bill that provided for the enlistment of 500,000 men for up to three years of service.

If the war had turned out to be of short duration, Bull Run would have been a disaster for the Union. But if, as now seemed more plausible, a long and nasty war was inevitable, that battle had a curiously salutary effect for the Union side. It provided a wake-up call for those optimists—like Seward or even Lincoln—who had hoped for or counted on a quick result.

– David Detzer, Donnybrook

Bull Run was a turning point in the American Civil War ... in the sense that the battle struck with impelling force upon public opinion at home and abroad, upon Congress, and upon the Commander-in-chief. It framed new patterns of thought and led to far-reaching changes in the conduct of the war. The failure at Bull Run inspired a second Northern rising. Volunteering accelerated, 90-day men reenlisted, states rushed fresh regiments forward in plenitude. ... As they realized victory would not come readily, a new mood fastened upon Northerners. An iron resolve entered the Northern soul ...

– James A. Rawley, Turning Points of the Civil War

The reaction in the Confederacy was more muted. There was little public celebration as the Southerners realized that despite their victory, the greater battles that would inevitably come would mean greater losses for their side as well.

Beauregard was considered the hero of the battle and was promoted that day by President Davis to full general in the Confederate Army. Stonewall Jackson, arguably the most important tactical contributor to the victory, received no special recognition, but went on to achieve glory with his 1862 Valley Campaign. Irvin McDowell bore the brunt of the blame for the Union defeat and was soon replaced by Maj. Gen. George B. McClellan, who was named general-in-chief of all the Union armies. McDowell was also present to bear significant blame for the defeat of Maj. Gen. John Pope's Army of Virginia by Gen. Robert E. Lee's Army of Northern Virginia thirteen months later, at the Second Battle of Bull Run. Patterson was also removed from command.

The name of the battle has caused controversy since 1861. The Union Army frequently named battles after significant rivers and creeks that played a role in the fighting; the Confederates frequently used the names of nearby towns and farms. The U.S. National Park Service uses the Confederate-inspired name (Manassas) for its national battlefield park, but the Union name (Bull Run) also has widespread currency in popular literature.

Battlefield confusion relating to battle flags, especially the similarity of the Confederacy's "Stars and Bars" and the Union's "Stars and Stripes", led to the adoption of the Confederate Battle Flag, which eventually became the most popular symbol of the Confederacy and the South in general.