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
William Godolphin (Royalist) July, two days later, the Royalists won a pyrrhic victory at the Battle of Lansdowne. Sir Bevill Grenvile fell at the battle. The foot were now besieged in Devizes but witnessed the destruction of Waller's forces at Roundway Down. The Western Royalists took Bath, and after joining Prince Rupert on 26 July 1643 they stormed Bristol. The Battle lasted over thirteen hours and at the end the Royalist had taken the City, but lost both Sir Nicholas Slanning and Sir John Trevanion. The Cornish returned to Devon, and unfer Prince Maurice, they took Exeter on 4 September and Dartmonth on