The events of the year 1644 fully proved the superiority of his abilities. In the south, where Essex held the command, the parliamentary forces underwent a succession of shameful disasters; but in the north the victory of Marston Moor fully compensated for all that had been lost elsewhere. That victory was not a more serious blow to the Royalists than to the party which had hitherto been dominant at Westminster, for it was notorious that the day, disgracefully lost by the Presbyterians, had been retrieved by the energy of Cromwell, and by the steady valour of the warriors whom he had trained.
These events produced the Selfdenying Ordinance and the new model of the army. Under decorous pretexts, and with every mark of respect, Essex and most of those who had held high posts under him were removed; and the conduct of the war was intrusted to very different hands. Fairfax, a brave soldier, but of mean understanding and irresolute temper, was the nominal Lord General of the forces; but Cromwell was their real head.
Cromwell made haste to organise the whole army on the same principles on which he had organised his own regiment. As soon as this process was complete, the event of the war was decided. The Cavaliers had now to encounter natural courage equal to their own, enthusiasm stronger than their own, and discipline such as was utterly wanting to them. It soon became a proverb that the soldiers of Fairfax and Cromwell were men of a different breed from the soldiers of Essex. At Naseby took place the first great encounter between the Royalists and the remodelled army of the Houses. The victory of the Roundheads was complete and decisive. It was followed by other triumphs in rapid succession. In a few months the authority of the Parliament was fully established over the whole kingdom. Charles fled to the Scots, and was by them, in a manner which did not much exalt their national character, delivered up to his English subjects.
While the event of the war was still doubtful, the Houses had put the Primate to death, had interdicted, within the sphere of their authority, the use of the Liturgy, and had required all men to subscribe that renowned instrument known by the name of the Solemn League and Covenant. Covenanting work, as it was called, went on fast. Hundreds of thousands affixed their names to the rolls, and, with hands lifted up towards heaven, swore to endeavour, without respect of persons, the extirpation of Popery and Prelacy, heresy and schism, and to bring to public trial and condign punishment all who should hinder the reformation of religion. When the struggle was over, the work of innovation and revenge was pushed on with increased ardour. The ecclesiastical polity of the kingdom was remodelled. Most of the old clergy were ejected from their benefices. Fines, often of ruinous amount, were laid on the Royalists, already impoverished by large aids furnished to the King. Many estates were confiscated. Many proscribed Cavaliers found it expedient to purchase, at an enormous cost, the protection of eminent members of the victorious party. Large domains, belonging to the crown, to the bishops, and to the chapters, were seized, and either granted away or put up to auction. In consequence of these spoliations, a great part of the soil of England was at once offered for sale. As money was scarce, as the market was glutted, as the title was insecure and as the awe inspired by powerful bidders prevented free competition, the prices were often merely nominal. Thus many old and honourable families disappeared and were heard of no more; and many new men rose rapidly to affluence.