The field was almost the same that the opposing forces had occupied a year and a month before when the first great battle of the war was fought. And many of them were the same men. Some who had engaged in that first conflict had gone home and had refused to reënlist; others had found soldiers’ graves since then—but still others on both sides were here again, no longer the raw recruits that they were before, but, with their year of hard experience in the field, they were trained soldiers, equal to any in the world.

The two armies faced each other in a line nearly five miles long. There was heavy fighting here and there along the line from the early morning hours, but no general engagement until late in the afternoon. The Union right pressed hard against the Confederate left and by ten o’clock had forced it back more than a mile. But the Confederates, presently reënforced in that quarter, hurled heavy masses of infantry against the Union right and regained much that it had lost. Late in the afternoon fresh regiments under Kearny and Hooker charged the Confederate left, which was swept back and rolled in upon the center. But presently the Southern General Hood, with his famous Texan brigade, rushed forward in a wild, irresistible dash, pressed Kearny back, captured one gun, several flags and a hundred prisoners. Night then closed over the scene and the two armies rested on their arms until the morning.

The first day’s battle is sometimes called the battle of Groveton, but usually it is considered as the first half of the second battle of Bull Run. It was a formidable conflict in itself. The Union loss was at least forty-five hundred men, the Confederate was somewhat larger. Over the gory field lay multitudes of men, the blue and the gray commingled, who would dream of battlefields no more. The living men lay down among the dead in order to snatch a little rest and strength that they might renew the strife in the morning.

It is a strange fact that Lee and Pope each believed that the other would withdraw his army during the night, and each was surprised in the morning to find his opponent still on the ground, ready, waiting, defiant. It was quite certain that on this day, August 30th, there would be a decisive action and that one of the two armies would be victor and the other defeated. The two opposing commanders had called in their outlying battalions and the armies now faced each other in almost full force, the Confederates with over fifty thousand men and the Union forces exceeding their opponents by probably fifteen thousand men. The Confederate left wing was commanded by Jackson, and the right by Longstreet. The extreme left of the Union army was under Fitz John Porter, who, owing to a misunderstanding of orders, had not reached the field the day before. The center was commanded by Heintzelman and the right by Reno.

In the early hours of the morning the hills echoed with the firing of artillery, with which the day was opened. Porter made an infantry attack in the forenoon, but was met by the enemy in vastly superior numbers and was soon pressed back in great confusion. As the hours passed one fearful attack followed another, each side in turn pressing forward and again receding. In the afternoon a large part of the Union army made a desperate onslaught on the Confederate left under Jackson. Here for some time the slaughter of men was fearful. It was nearing sunset. Jackson saw that his lines were wavering. He called for reënforcements which did not come and it seemed as if the Federals were about to win a signal victory. But this was not to be. Far away on a little hill at the Confederate right Longstreet placed four batteries in such a position that he could enfilade the Federal columns. Quickly he trained his cannon on the Federal lines that were hammering away at Jackson, and opened fire. Ghastly gaps were soon cut in the Federal ranks and they fell back. But they re-formed and came again and still again, each time only to be mercilessly cut down by Longstreet’s artillery. At length Longstreet’s whole line rushed forward, and with the coming of darkness, the whole Union front began to waver.

General Lee, seeing this, ordered the Confederates in all parts of the field to advance. With wild, triumphant yells they did so. It was now dark and there was little more fighting; but Lee captured several thousand prisoners. Pope retreated across Bull Run with the remnant of his army and by morning was ensconced behind the field-works at Centreville.

There was no mistaking the fact that General Pope had lost the battle and the campaign. He decided to lead his army back to the entrenchments of Washington. After spending a day behind the embankments at Centreville, the retreat was begun. Lee’s troops with Jackson in the advance pursued and struck a portion of the retreating army at Chantilly.

It was late in the afternoon of September 1st. The rain, accompanied by vivid lightning and terrific crashes of thunder, was falling in torrents as Stuart’s horsemen, sent in advance, were driven back by the Federal infantry. Jackson now pushed two of A. P. Hill’s brigades forward to ascertain the condition of the Union army. General Reno was protecting Pope’s right flank, and he lost no time in proceeding against Hill. The latter was promptly checked, and both forces took position for battle. One side and then the other fell back in turn as lines were re-formed and urged forward. Night fell and the tempest’s fury increased. The ammunition of both armies was so wet that much of it could not be used. Try as they would the Confederates were unable to break the Union line and the two armies finally withdrew. The Confederates suffered a loss of five hundred men in their unsuccessful attempt to demoralize Pope in his retreat, and the Federals more than a thousand, including Generals Stevens and Kearny.

General Kearny might have been saved but for his reckless bravery. He was rounding up the retreat of his men in the darkness of the night when he chanced to come within the Confederate lines. Called on to surrender, he lay flat on his horse’s back, sank his spurs into its sides, and attempted to escape. Half a dozen muskets were leveled and fired at the fleeing general. Within thirty yards he rolled from his horse’s back dead.

The consternation in Washington and throughout the North when Pope’s defeated army reached Arlington Heights can better be imagined than described. General Pope, who bore the brunt of public indignation, begged to be relieved of the command. The President complied with his wishes and the disorganized remnants of the Army of Virginia and the Army of the Potomac were handed to the “Little Napoleon” of Peninsula fame, George B. McClellan.