While the Irish campaign was at its height, the Scotch, who had declared for Charles II., made ready for war, and the English Parliament demanded Cromwell’s return. For some months, however, he remained in Ireland, capturing Kilkenny and various other towns and castles and constantly extending the area of English sway, driving the Irish westward. His campaign was a model for all military operations undertaken in a difficult country, covered by a network of fortified places, and held by masses of guerillas or irregular levies, backed by the whole population. After Clonmel was taken he handed over the command to Ireton; the heavy work had been done, and what remained to do was tedious and harassing rather than formidable, while the Scotch business could no longer wait.

In May, 1650, Cromwell landed in England, took his seat in the House of Commons, and was made Captain-General and Commander-in-Chief of the forces, Fairfax having refused to take part in any offensive campaign against the Covenanters. It is recorded that when Cromwell entered London, greeted by surging multitudes, someone called his attention to the way the people turned out to do him honor for his triumph; whereupon he dryly answered that it was nothing to the way they would turn out to see him hanged.

The refusal of Fairfax to march against the Scotch left Cromwell the only hope of the Commonwealth. It cannot too often be repeated that, whether in the end Cromwell’s ambitions did or did not obscure the high principles with which they certainly blended, yet he rose to supreme power less by his own volition than by the irresistible march of events, and because he was “a man of the mighty days, and equal to the days.” In this world, in the long run, the job must necessarily fall to the man who both can and will do it when it must be done, even though he does it roughly or imperfectly. It is well enough to deplore and to strive against the conditions which make it necessary to do the job; but when once face to face with it, the man who fails either in power or will, the man who is half-hearted, reluctant, or incompetent, must give way to the actual doer, and he must not complain because the doer gets the credit and reward. President Buchanan utterly disbelieved in the right of secession, but he also felt doubts as to its being constitutional or possible to “coerce a sovereign state,” and therefore he and those who thought like him had to give place to men who felt no such doubts. It may be the highest duty to oppose a war before it is brought on, but once the country is at war, the man who fails to support it with all possible heartiness comes perilously near being a traitor, and his conduct can only be justified on grounds which in time of peace would justify a revolution. The whole strength of the English Commonwealth was in the Independents. Royalists, Episcopalians, Presbyterians, extreme Levellers, were all against it. When the Scotch declared for Charles II. as King, not only of Scotland but of England, they rendered it necessary that either England or Scotland should be conquered. Fairfax declared that he was willing to defend the English against the Scotch attack, but not to attack Scotland. The position was puerile; a fact which should be borne in mind by the excellent persons who at the present day believe that a nation can be somehow armed for defence without being armed for attack. No fight was ever yet won by parrying alone; hard hitting is the best parry; the offensive is the only sure defensive. To refuse to attack the Scotch was merely to give them a great initial advantage in the inevitable struggle. Cromwell was far too clear-sighted and resolute to suffer from oversentimental scruples in the matter. Accordingly he undertook the task; did it with his accustomed thoroughness; and from that moment became, not merely the first man in the Kingdom, but a man without a second or a third, without a rival of any kind.

Cromwell Leading the Assault on Drogheda.
After the batteries had made a breach in the walls an attempt was made to take the town by storm. Cromwell, seeing his men driven back, placed himself at the head of the column, and, rallying the troops, soon had complete possession of the place. His soldiers were ordered to give no quarter to those carrying arms, and it is said that more than two thousand of the defenders were put to the sword.

Charles had landed in Scotland and been proclaimed King, but was forced not merely to take the Covenant but to make degrading professions of abandonment and renunciation of his father’s acts and principles. He was, after all, to be a King only in name, if the dominant party in Scotland could have its way. Dour as Dopper Boers, the Covenanters were determined that the government should be, though in form royal, in essence a democratic theocracy, where the men of the strictest Calvinistic sect should all have their say in an administration marked by the most bitter intolerance of every religious belief which differed by even a shade from their own. To get real religious liberty in those days one had to go to Rhode Island or Maryland; but at least the English Puritans were, in this respect, far in advance of the men against whom they were pitted.

There was also a Royalist party in Scotland, which had scant sympathy with the Covenanters, but was only allowed to exist at all by their sufferance. When at this time Montrose landed to help the King, the Presbyterian friends of the King promptly overcame and slew him. The Kirk was supreme, and in the army which it gathered to meet Cromwell it made zeal for the Covenant the all-important requirement for a commission. It would not even permit places of command to be given to the officers who had marched with Hamilton’s army. The Royalists around the King complained bitterly that the commissions were most apt to go to sons of ministers, and if not, then to men whose godliness and religious enthusiasm were but poor substitutes for training and skill in arms. Cromwell’s soldiers possessed all of these qualities. Devotion to country or to religion adds immensely to the efficiency of a soldier, but is a broken reed by itself. Officers whose only qualifications are religious or patriotic zeal, are better than officers who seek service to gratify their vanity, or who are appointed through political favor; but until they have really learned their business, and unless they are eager and able to learn it, this is all that can be said of them.

Cromwell marched north to the walls of Edinburgh, where David Leslie lay with the Covenanting army of the Kirk. Leslie had fought under Gustavus Adolphus, and beside Cromwell at Marston Moor, where the Scotch insisted that they had saved the Cromwellians from defeat. Now the two sides were decisively to test the question of supremacy. But the contest was really utterly unequal. Cromwell had a veteran army, one which had been kept under arms for years. Leslie had an army which had been brought together for this particular war. He was, therefore, under the terrible disadvantage which rests on any man who, with raw volunteers, confronts well-trained, well-led veterans. There were under him plenty of officers and men with previous military experience—though, as the Royalist above quoted remarked, too many of the officers were “sanctified creatures who hardly ever saw or heard of any sword but that of the Spirit”—yet the regiments were all new, and the men had no regimental pride or confidence, no knowledge of how to act together, no trust in one another or in their commanders; while Cromwell’s regiments were old, and the recruits in each at once took their tone from the veterans around them.

Although Leslie’s force was twice that of Cromwell’s, he knew his trade too well to risk a stricken field on equal terms, when the soldiers were of such unequal quality. He accordingly intrenched in a strong position covering Edinburgh, and there awaited the English attack. Cromwell was a born fighter, always anxious for the trial of the sword; a man who habitually took castles and walled towns by storm, himself at need heading the stormers, and who won his pitched battles by the shock of his terrible cavalry, which he often led in person, and which invariably ruined any foe whom he had overthrown. He now advanced with too much confidence and found himself in a very ugly situation; his men sickening rapidly, while Leslie’s army increased in numbers and discipline. Like every great commander, Cromwell realized that the end of all manœuvring is to fight—that the end of strategy should be the crushing overthrow in battle of the enemy’s forces. On this occasion his eagerness made him forget his caution; and all his masterly skill was needed to extricate him from the position into which he had been plunged by his own overbearing courage and the wariness of his opponent.

For some time he lay before Edinburgh, unable to get Leslie to fight, and of course unwilling to attack him in his intrenchments. Sickness and lack of provisions finally forced him to retreat. He believed that this would draw Leslie out of his works, and his belief was justified by the event. The English now mustered some 11,000 men; the Scotch, 22,000. Leslie was still cautious about fighting, but the ministers of the Kirk, who were with him in great numbers, hurried him on. He followed Cromwell to Dunbar, where he cut off the English retreat to England. But his army was on the hills and was suffering from the weather. He thought that the discouraged English were about to embark on their ships. The ministers fiercely urged him to destroy the “sectaries” whom they so hated, and in the afternoon of December 2d he crowded down toward the lower ground, near the sea.