Throughout the day, the Irish cavalry showed a vast superiority to those of the British, and even broke and destroyed regiments of infantry; and when the whole army fell back they closed up the rear, and effectually prevented any attempt at pursuit. Thus, the battle of the Boyne was fought rather to cover a retreat than defend a position. The loss on either side was estimated at about five hundred, and General Hamilton was the only prisoner taken by the British.
The honours of the fight certainly rested with the Irish, who, against a vastly superior force, comprising some of the best troops in Europe, maintained themselves throughout the day, and gained, indeed, in most points, a decided advantage.
King James's valour had entirely evaporated before the first shot was fired. Instead of following William's example, and leading his troops in the conflict which was to decide the fate of his crown, and which he himself had precipitated, he took up his position at a safe distance from danger, on the hill of Donore, and as soon as the battle approached that point he rode off to Duleek, where he placed himself at the head of the French troops, and led their retreat. He soon, however, rode on ahead, and arrived in Dublin in a state of consternation and despair, the first fugitive from the field of battle. In the meantime the army was whole and unbroken, marching in perfect order from the field of battle, while its king and commander was doing his best to ruin the cause by spreading dismay and alarm throughout the country.
The next morning the king sent for the mayor and corporation of Dublin, and told them that he was under the necessity of taking care of himself, and recommended them to do the same, and to make the best terms they could with the enemy. He then at once mounted and made his flight to Waterford, ordering the bridges to be broken down behind him, although the British army had not yet moved from its position on the Boyne. On reaching Waterford James at once embarked on board the ship he had ordered to be in readiness, and sailed for France. His conduct, and his conduct alone, converted the battle of the Boyne, which was in effect a kind of drawn battle, into a great victory for William.
It had, indeed, more than answered the object which the Irish commanders proposed to themselves. Their plan was to accustom the new and badly armed levies to stand firm against the steadiness and experience of William's veteran troops, and then to withdraw without committing themselves to a decisive combat, with a view of protracting the campaign until William should be forced to leave Ireland, and his foreign army should be worn out by winter service in an uncongenial climate. Every day would, they calculated, improve their own army and weaken and reduce that of the enemy.
Their position at the Boyne enabled them to try their plan of partial combat to what extent they chose, without danger of being forced into a more extensive action than they deemed expedient. The Irish troops had greatly surpassed the expectation of their own officers, and had filled William's generals with amazement; and it is probable that, if a large part of the infantry and artillery had not been sent off early in the day, the experiment might have been turned into a brilliant victory. As it was, William was so surprised and alarmed at the resistance he had encountered, that he remained some days at the Boyne without advancing. He had been told by all, except the Duke of Schomberg, that the resistance of the Irish would be contemptible, and the most forward of those who had scoffed at the courage of the Irish had been the Enniskilleners, who had themselves, on the day of battle, shown so unmistakably the white feather. After this the king disliked and despised these troops, and hung them without ceremony, when taken in those acts of plunder and slaughter to which they were so much addicted.
So far from the flight of King James discouraging the army, it caused universal joy. It was his constant vacillation, interference, and cowardly action which had paralysed his troops; and they felt that, now they were free to act without his interference, they would be able to cope with the invaders.
William at once offered favourable terms, if Ireland would submit to his authority; but these were declined, partly owing to the powerful influence of France, partly to the fear that the terms would not be observed, partly to the apprehension of all the gentry, that the lands which they had but just recovered from the hands of Cromwell's settlers would be again taken from them.
At the battle of the Boyne, Walter Davenant, with his father's troop, had taken part in all the desperate charges upon the enemy. During the long hours the battle had lasted, the cavalry had been incessantly engaged. Time after time they had charged down upon the Dutch squares, and no sooner had the ranks been reformed, after recoiling from the line of fixed bayonets, than they were called upon to charge in another direction.
Walter's heart beat high as they dashed into the midst of the French infantry, or shattered and drove before them the Danish horse; but there was little time to think, and, looking back upon the day when all was over, it seemed to him a chaos of excitement and confusion, of which he could hardly recall even the chief incidents.