This led to Causation the Third English Civil War , when Scotland was invaded Attack and occupied Control by the Parliamentarian New Model Army under Oliver Cromwell .

The war ended Process_end with Parliamentarian victory at the Battle Hostile_encounter of Worcester on 3 September 1651 .

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 .

The First Battle Hostile_encounter of Newbury was a battle Hostile_encounter of the First English Civil War that was fought Hostile_encounter on 20 September 1643 between a Royalist army , under the personal command Control of King Charles , and a Parliamentarian force led by the Earl of Essex .

Charles rallied Military_operation his forces Military_operation and pursued Aiming Essex , overtaking Change_of_leadership the Parliamentarian army at Newbury and forcing them to march Self_motion past the Royalist force to continue their retreat Escaping .

This left a hole in the Parliamentarian line , dividing the army into two wings through which the Royalists hoped to pass Motion_directional , splitting Destroying the Parliamentarians and allowing Preventing_or_letting Charles 's troops to encircle Besieging and defeat Conquering the enemy .

By May 1652 , Cromwell 's Parliamentarian army had defeated Earnings_and_losses the Confederate and Royalist coalition in Ireland and occupied Control the country—bringing to an end Process_end the Irish Confederate Wars Hostile_encounter ( or Eleven Years ' War Hostile_encounter ) .

The Parliamentarian reconquest Conquering of Ireland was brutal , and Cromwell is still a hated figure in Ireland .

Estimates of the drop in the Irish population resulting Causation from the Parliamentarian campaign Military_operation range from 15 to 83 percent .