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What were the crenels and loopholes on the Great Wall used for?
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Great Wall of China
Great Wall of China, near Beijing.
The crenels and loopholes on the Great Wall of China were essential defensive features designed to protect soldiers while allowing them to engage attackers.
- Crenels (duokou): These were 7-foot-high structures located on the outer side of the wall's top. The large openings on the upper part of these crenels were used by defenders to observe the enemy and fire upon them.1
- Loopholes: Positioned on the lower part of the crenels, these smaller openings allowed soldiers to shoot at attackers while remaining shielded by the wall's structure.1
Together, these features provided a tactical advantage, enabling guards to monitor the terrain and defend the fortifications effectively during battles.