Oliver Cromwell with Sir Thomas Fairfax in command and Cromwell as Lieutenant-General of cavalry and second-in-command. At the critical Battle of Naseby in June 1645, the New Model Army smashed the King's major army. Cromwell led his wing with great success at Naseby, again routing the Royalist cavalry. At the Battle of Langport on 10 July, Cromwell participated in the defeat of the last sizeable Royalist field army. Naseby and Langport effectively ended the King's hopes of victory, and the subsequent Parliamentarian campaigns involved taking the remaining fortified Royalist positions in the west of England. In October 1645, Cromwell besieged and took
George Munro, 1st of Newmore Cromwell in the Tower of London. George Munro then returned to Scotland in 1648 where he was appointed General by Charles I of England, and thus becoming a royalist. George Munro having returned to Scotland with 1200 horse and 2100 foot soldiers was sent to support the royalist James Hamilton, 1st Duke of Hamilton. The Scottish royalists were defeated at the Battle of Preston (1648) by the Parliamentarian forces of Oliver Cromwell. However, Munro's involvement was limited as prior to the battle an argument had ensued because he had refused to serve under James Livingston, 1st Earl of Callendar who