The combined forces Causation of the English Parliamentarians under Lord Fairfax and the Earl of Manchester and the Scottish Covenanters under the Earl of Leven defeated Conquering the Royalists commanded Control by Prince Rupert of the Rhine and the Marquess of Newcastle .

After a confused fight Hostile_encounter lasting Process_end two hours , Parliamentarian cavalry under Oliver Cromwell routed Scrutiny the Royalist cavalry from the field and , with Leven 's infantry , annihilated Destroying the remaining Royalist infantry .