A glacis is a sloped area of land that extends from the base of a fortification, designed to improve the defensive capabilities of a castle or military structure. This slope is typically made of earth or stone and is intended to provide a clear field of fire for defenders while making it difficult for attackers to approach the walls. The design of a glacis helps to protect the fortifications from direct assaults, as the slope can hinder movement and visibility for enemies. Additionally, the glacis may be planted with vegetation or reinforced to further enhance its effectiveness. This feature is an important element in military architecture, particularly during the Renaissance and early modern periods, where it contributed to the overall strength and security of fortifications.

英語での「glacis」の定義と意味

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