How was corfe castle destroyed?

It was destroyed with rocket launchers?? Certainly an idea but the Castle fell to Parliamentarian Forces during the English Civil war after a member of the Castle staff let the enemy in through a side door. The Castle was then destroyed by gunpowder, to make it unusable. The process is known as 'Slighting'. After the destruction much of the stone work was carried away and many of the houses in Corfe Castle village have stonework from the castle in their construction.