Air raid shelter
OverviewTypesHistoryAir-raid shelters in modern timesBibliographyExternal links
Air raid trenches are forms of trenches that began to be constructed for defensive purposes around the world after the creation of bomber aircraft. They were especially prevalent during World War II, but have also been used in other wars. Cellars have always been much more important in Continental Europe than in the United Kingdom and especially in Germany almost all houses and apartment blocks h