Fortification calls to mind images of high walls establishing clear lines between inside and outside and immobilizing enemies. However, even the most seemingly inert fortifications rely on subtle forms of mobility and more elaborate spatial relations. This article examines fortification as a technique of power in which warfare, the design of the built environment, and the organization of space are intertwined. Where research on fortification tends to emphasize the symbolic, sovereign aspirations of wall-building, the approach advanced here focuses on the spatial technologies and infrastructural projects of military architecture and engineering that remake space through martial means. The article follows the trajectory within military architecture by which linear fortifications became defense in depth and asks how transformations of ‘depth’ in contemporary warfare have come to integrate more complex, non-linear notions of space and time. By tracing the ways in which the curtain wall of Vauban’s bastion fortress transformed into the radar curtain, I argue that fortification constitutes a ‘becoming war’ in which ‘defensive’ war intensifies organized violence. As such, the concept of fortification proves indispensable for understanding the reinforced boundaries and delineated pathways cutting across the global space of contemporary warfare.

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关于防御工事：军事建筑、几何力量和防御设计

防御工事让人想起高墙在内外之间建立清晰的界限并固定敌人的形象。然而，即使是最看似惰性的防御工事也依赖于微妙的机动性和更复杂的空间关系。本文将防御工事作为一种权力技术，其中战争、建筑环境设计和空间组织相互交织。防御工事的研究倾向于强调墙壁建筑的象征性和主权愿望，而这里提出的方法则侧重于通过军事手段改造空间的军事建筑和工程的空间技术和基础设施项目。这篇文章遵循军事建筑中线性防御工事成为纵深防御的轨迹，并询问当代战争中“纵深”的转变如何整合更复杂的非线性空间和时间概念。通过追踪沃邦堡垒堡垒的幕墙转变为雷达幕墙的方式，我认为设防构成了一场“变成战争”，其中“防御性”战争加剧了有组织的暴力。因此，防御工事的概念对于理解跨越当代战争全球空间的强化边界和划定的路径来说是必不可少的。通过追踪沃邦堡垒堡垒的幕墙转变为雷达幕墙的方式，我认为设防构成了一场“变成战争”，其中“防御性”战争加剧了有组织的暴力。因此，防御工事的概念对于理解跨越当代战争全球空间的强化边界和划定的路径来说是必不可少的。通过追踪沃邦堡垒堡垒的幕墙转变为雷达幕墙的方式，我认为设防构成了一场“变成战争”，其中“防御性”战争加剧了有组织的暴力。因此，防御工事的概念对于理解跨越当代战争全球空间的强化边界和划定的路径来说是必不可少的。