Battle of Naseby Confederation through the Cessation Treaty, and Catholic nations in Europe. By publishing this correspondence, entitled "The King's Cabinet Opened", Parliament gained much support in favour of fighting the war to a finish. Within a year, the first civil war ended in a Parliamentarian military victory. Battle of Naseby The Battle of Naseby was a decisive engagement of the English Civil War, fought on 14 June 1645 between the main Royalist army of King Charles I and the Parliamentarian New Model Army, commanded by Sir Thomas Fairfax and Oliver Cromwell. It was fought near the village of Naseby in Northamptonshire. After
Prince Rupert of the Rhine leading members of the Royalist circle. Rupert first travelled to the Royal court in exile at St Germain but found it still dominated by the Queen and her favourite, Rupert's enemy Digby. Instead, Rupert moved on, accepting a well paid commission from Anne of Austria to serve Louis XIV as a "mareschal de camp", subject to Rupert being free to leave French service to fight for King Charles, should he be called upon to do so. In 1647 Rupert fought under Marshal de Gassion against the Spanish. After a three-week siege, Rupert took the powerful fortress of La Bassée through