Why were castles so important to warfare during the Middle Ages? Why were the besieged instead of being bypassed, cut off, and made militarily irrelevant?

If a lord wanted to build a castle to protect a town,

The lord wouldn't build a castle. He would build a wall around the town.

There were many forts and earthworks that were built to defend specific locations. Thus, an important locations was identified; then that location was fortified. But, that's not what a castle was for. A castle was built in a place that had no strategic importance. The only reason why anybody would go there was because the castle was there. And they built these castles in remote, difficult to reach locations, so that getting to them would be difficult. The purpose of the castle was to protect what was inside. The purpose of a fort is to defend a location.

so, I'm sure you consider yourself to be a very smart dude. I'm sure your hundreds of girlfriends all appreciate when you point out historical inaccuracies in movies, but you're wrong. I know it's hard for you to accept because an important man like you has probably never been wrong before in your entire life. But, this time you are wrong. I'm not invalidating you as a person. I'm not challenging your manhood. I'm just telling you that you're wrong.

/r/AskHistory Thread Parent