20th Century Military Fortifications

20th-century military fortifications evolved with advancements in technology, incorporating concrete bunkers, reinforced tunnels, and interconnected defenses. During both World Wars and the Cold War, these structures aimed to protect strategic locations, control borders, and withstand artillery, aerial bombardments, and missile attacks. Innovations included underground bunkers, anti-tank barriers, and fortified command posts, reflecting a focus on survivability and strategic resilience. While some were designed for offensive use, many served as defensive measures to limit enemy movement and protect vital assets, playing a crucial role in shaping military strategy and national security during the era.