Battle of Blackburn's Ford

The Battle of Blackburn's Ford took place on July 18, 1861, in the Confederate state of Virginia, as part of the Manassas campaign of the American Civil War. Union general Irvin McDowell's Army of Northeastern Virginia was marching south towards the Confederate capitol of Richmond, and encountered the Confederate Army of the Potomac under the command of P. G. T. Beauregard. McDowell sent troops from Daniel Tyler's division to probe the Confederate defenses along Bull Run Creek to locate the Confederate left flank. At Blackburn's Ford, the Union troops attempted to cross but Confederate fire broke up the attack. The repulse at Blackburn's Ford led McDowell to seek to attack the Confederates at a different point along their line, leading to the First Battle of Bull Run days later.

On July 16, 1861, the untried Union Army of Northeastern Virginia under Brigadier General Irvin McDowell, 35,000 strong, marched out of the Washington, D.C., defenses to give battle to the Confederate Army of the Potomac, which was concentrated around the vital railroad junction at Manassas. Moving slowly, the army reached Fairfax Court House on July 17; the next day, McDowell ordered division commander Brig. Gen. Daniel Tyler to look for a fording point across Bull Run Creek and to "keep up the impression that we are moving on Manassas".

Wikipedia