ft free to move to form a junction with Beauregard!
This was precisely what Johnston now found occasion to do. As will presently appear, McDowell's reconnoitring parties appeared in front of Bull Run on the 18th of July.
On the same day a message reached Johnston from Beauregard: If you wish to help me, now is the time.
Johnston promptly availed himself of the opportunity to escape unmolested.
Making a rapid flank march by way of Ashby's Gap, he took cars on the Manassas Gap Railroad at Piedmont, and joined Beauregard with his advance brigades on Saturday, the 20th.
What part they played in the coming battle will presently appear.
General McDowell moved his army from the banks of the Potomac on the afternoon of July 16th.
The movable column consisted of four divisions—the First Division, under General Tyler; the Second, under General Hunter; the Third, under General Heintzelman; the Fifth, under Colonel Miles.
The Fourth Division, under General Runyon, was left in the works o