While the ministers were thanking God “for sending the sectarian army (for so they designated the Independents) back the way they came, and flinging such a terror into their hearts, as made them fly when none pursued,”[434] Cromwell suddenly re-appeared at Musselburgh, and thus put an end to their thanksgivings.

Seeing no hopes of the Scots army leaving its entrenchments, and afraid that farther delay might be injurious to him, Cromwell made a movement on the 13th of August to the west, as far as the village of Colinton, three miles south-west from Edinburgh, where he posted the main body of his army. The Scottish general thinking that Cromwell had an intention of attacking him in his rear, raised his camp and marched towards Corstorphine, about two miles north from Colinton, where he drew out his army. Both armies surveyed each other for several days, but neither attempted to bring the other to action. As he could not, from the nature of the ground which lay between the two armies, attack his opponents with any probability of success, Cromwell again returned to Musselburgh with his army on a Sunday, that he might not be harassed in his march by the Covenanters, who never fought but on the defensive on that day.

Although the king before his landing had subscribed the Solemn League and Covenant, and although they had purged the army to their heart’s content, still Argyle and his party were not satisfied, and they, therefore, required his majesty to subscribe a declaration “for the satisfaction of all honest men.” On the 16th of August, after some hesitation and with slight modification of the terms, Charles was induced to sign a most humiliating declaration, which reflected upon the conduct of his father, lamented the “idolatry” of his mother, pledged him to renounce the friendship of all who were unfriendly to the Covenant, establish Presbyterianism in England, in short, made him a mere tool in the hands of the extreme Covenanters.

Although every sober and judicious person must have perceived that there was little probability that such a declaration would be regarded by the young monarch when released from his trammels, yet so greatly important was his majesty’s subscription to the instrument considered by the Covenanters, that they hailed it with the most lively emotions of joy and gratitude; and the ministers who, only two days before, had denounced the king from the pulpits as the root of malignancy, and a hypocrite, who had shown, by his refusal to sign the declaration, that he had no intention to keep the Covenant, were the first to set the example. The army, excited by the harangues of the ministers during a fast, which they proclaimed to appease the anger of heaven for the sins of the king and his father, longed to meet the enemy, and it required all the influence and authority of General Leslie to restrain them from leaving their lines and rushing upon the “sectaries;” but, unfortunately for the Covenanters, their wish was soon to be gratified.

It does not appear that the chiefs of the Covenanters were actuated by the same enthusiasm as the ministers and the common soldiers, or that the generals of the army were very sanguine of success. They were too well aware of the composition of Cromwell’s veteran host, to suppose that their raw and undisciplined levies, though numerically superior, could meet the enemy in the open field; and hence they deemed it a wise course of policy to act on the defensive, and to harass them by a desultory warfare as occasion offered. This system had been so successful as to embarrass Cromwell greatly, and to leave him no alternative but a retreat into England—a course which he was obliged to adopt more speedily, perhaps, than he would otherwise have done, in consequence of extensive sickness in his army. No indications of any movement had appeared up to the 29th of August, as on that day the Committee of Estates adjourned the meeting of parliament, which was to have then assembled, till the 10th of September, “in respecte that Oliver Cromwell and his armey of sectaries and blasphemers have invadit this kingdome, and are now laying within the bosome thereof.”[435]

On the 30th of August, however, Cromwell collected his army at Musselburgh, and having put all his sick on board his fleet, which lay in the adjoining bay, he gave orders to his army to march next morning to Haddington, and thence to Dunbar. He made an attempt to obtain the consent of the Committee of Estates to retire without molestation, promising never again to interfere in the affairs of Scotland; but they refused to agree to his proposal, as they considered that they would be able to cut off his retreat and compel him to surrender at discretion.

Next morning Cromwell’s army was in full retreat towards Haddington. The Scots army followed in close pursuit, but with the exception of some slight skirmishing between the advanced guard of the Scots and Cromwell’s rear, nothing important took place. Cromwell halted during the night at Haddington, and offered battle next day; but as the Scots declined, he continued his retreat to Dunbar, which he reached in the evening. With the intention of cutting off his retreat, Leslie drew off his army to the south towards the heights of Lammermuir, and took up a position on Doon hill. Having at the same time secured an important pass called the Peaths, through which Cromwell had necessarily to pass on his way to Berwick, the situation of the latter became extremely critical, as he had no chance of escape but by cutting his way through the Scots army, which had now completely obstructed his line of retreat. Cromwell perceived the danger of his situation, but he was too much of an enthusiast to give way to despair; he deliberately, and within view of the enemy, shipped off the remainder of his sick at Dunbar, on the 2d of September, intending, should Providence not directly interpose in his behalf, to put his foot also on board, and at the head of his cavalry to cut his way through the Scots army.[436] But as, in an affair of such importance, nothing could be done without prayer, he directed his men to “seek the Lord for a way of deliverance and salvation.”[437] A part of the day was accordingly spent in prayer, and at the conclusion, Cromwell declared, that while he prayed he felt an enlargement of heart and a buoyancy of spirit which assured him that God had hearkened to their prayers.[438]

While Cromwell and his men were employed in their devotional exercises, a council of war was held by the Scottish commander to deliberate upon the course to be pursued in the present crisis. As Leslie considered himself perfectly secure in his position, which could not be assailed by the enemy without evident risk of a defeat, and as he was apprehensive of a most formidable and desperate resistance should he venture to attack the brave and enthusiastic Independents, who were drawn out within two miles of his camp; he gave as his opinion that the Scottish army should not only remain in its position, but that Cromwell should be allowed to retire into England on certain easy conditions. The officers of the army concurred in the views of the general, but this opinion was overruled by the Committees of the Estates and kirk, who, anxious to secure their prey, lest by any possibility it might escape, insisted that the army should descend from the heights and attack the “army of sectaries and blasphemers,” which they fully expected the Lord would deliver into their hands.

In pursuance of the orders of the Committees to attack Cromwell early the following morning, Leslie drew down his men on the evening of the 2d of September from the heights which they occupied to the level ground below, that he might be ready to commence the attack before the enemy should be fully on their guard. But nothing could escape the penetrating eye of Cromwell, who, though pondering with solicitude upon the difficulties of his situation, was not inattentive to the enemy, whose motions he personally watched with the utmost vigilance and assiduity. He was about retiring for the night, when looking through his glass for the last time that evening, he perceived, to his infinite joy, the Scottish army in motion down the hill. The object of this movement at once occurred to him, and in a rapture of enthusiasm he exclaimed, “They are coming down;—the Lord hath delivered them into our hands.” A strong spirit of religious enthusiasm had in fact seized both armies, and each considered itself the peculiar favourite of heaven.