The 6th Louisiana Infantry Regiment, famously known as the Irish Brigade, is a Confederate States Army unit organized in New Orleans in May 1861 and mustered in June under Colonel Isaac G. Seymour. The regiment is composed largely of Irish immigrants and is part of the Army of Northern Virginia.

From May to June 1862, the 6th Louisiana participates in the Shenandoah Valley Campaign under General Thomas “Stonewall” Jackson. By early August, they are assigned to Jackson’s Command within Richard S. Ewell’s Division, Hays’ Brigade. On August 28–30, 1862, they fight at the Second Battle of Bull Run (also called the Second Battle of Manassas) in Prince William County, Virginia.

The battle is part of the Northern Virginia campaign. Union army General John Pope’s Army of Virginia faces Robert E. Lee’s Army of Northern Virginia. On August 28, Jackson attacks a Union column at Brawner’s Farm, drawing Pope’s attention. On August 29, Pope launches assaults on Jackson’s position along an unfinished railroad grade, which are repulsed with heavy casualties. On August 30, General James Longstreet’s arrival and a massive Confederate counterattack forces the Union retreat.

The 6th Louisiana, as part of Jackson’s command, is engaged in the defensive positions along Stony Ridge and in the fighting around the railroad grade. While specific casualty records for the regiment on this date are not detailed in the provided sources, the Irish Brigade is known for its tenacity in defensive and assault roles, and its participation in this battle is part of its service in the Army of Northern Virginia until the war’s end.

Following the Second Battle of Bull Run, the 6th Louisiana continues to serve in the Army of Northern Virginia through the Maryland campaign and other major battles, eventually being consolidated with the 5th and 7th Louisiana Infantry Regiments in November 1864 and mustered out at Appomattox in April 1865.

In summary, on August 28–30, 1862, the 6th Louisiana Infantry (Irish Brigade) fights under Jackson’s command in the Second Battle of Bull Run, contributing to the Confederate victory that allows Lee to invade Maryland.