t servant, Irwin McDowell, Brigadier-General Commanding.
First Division. General Tyler's report.
Headquarters First Division, Department N. E. Va., Washington, July 27, 1861.
General: In obedience to order No. 22, dated Centreville, July 20, Sherman's, Schenck's, and Keyes's brigades, of this division — Richardson's brigade having been left in front of Blackburn's Ford — moved at half-past 2 A. M., on the 21st inst., to threaten the passage of the Warrenton turnpike bridge, on Bull of Tyler's Division and Gen. McDowell's Corps. Near Arlington, July 25, 1861.
General: I have the honor to submit the following report as to the operations of my brigade in front of the enemy at Bull Run, on Sunday, July 21.
On the night of July 20 I was summoned to attend a meeting of commanders of brigades at the Headquarters of the commanding officer in the field, Gen. McDowell; and, in common with the other commanders of brigades, I was instructed as to what was expected of my particul