1. Defense and Protection: Castles were primarily built as defensive structures, providing protection against enemy attacks during times of war. The thick walls, towers, and moats made castles difficult for attackers to penetrate.
2. Stronghold and Refuge: Castles served as fortified strongholds for the lord and his family, as well as their retainers and the population of the surrounding area. In times of conflict, people could seek refuge within the castle walls for safety.
3. Strategic Locations: Castles were often built in strategic locations, such as hilltops or near important trade routes, giving defenders an advantage in terms of visibility and control over the surrounding terrain.
4. Control over Territory: Castles played a crucial role in maintaining control over territory during medieval warfare. They provided a base of operations for military campaigns and helped consolidate power and authority.
5. Accommodation for Troops: Castles provided accommodation and supplies for the lord's military forces, including soldiers, knights, and other warriors.
6. Stores and Supplies: Castles served as storage facilities for food, weapons, armor, and other essential supplies needed to sustain the garrison and the local population during times of conflict.
7. Communication and Signaling: Castles often had towers and烽火台, which allowed for long-distance communication and the transmission of signals in times of war.
8. Base for Military Operations: Castles could be used as launching points for offensive military campaigns against enemies, as well as to respond to attacks and threats.
Overall, castles were vital military structures that provided protection, defense, and strategic advantages during medieval warfare. They played a crucial role in maintaining power and control over territory, as well as ensuring the safety and well-being of the lord, his family, and the local population during times of conflict.