Why did kings and lord attack castles?

Castle sledges were common in the Middle Ages. Any English lord who built a castle without the king’s permission risked having it taken away or destroyed. And an ambitious lord couldn’t conquer new territory unless he took control of each castle along the way. Otherwise, his army faced constant harassment from soldiers stationed in each of the enemy’s castles. And many castles were worth the risk an expense of a siege because they sat in strategic locations – alongside vital river routes or near important cities. Dover Castle, overlooking the English Channel, was considered the key to England’s defense. If it fell, the rest of England would be easy pickings.

 

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