Longer-ranged weapons dispersed the modern coastal fortress

Longer gun ranges allowed coastal fortifications to spread across larger areas. Fixed positions could carry heavier guns because those weapons did not have to move, while buried shelters and dispersed gun positions reduced the vulnerability of a single compact fort. In this interpretation, Chain Home radar and the fighter airfields it supported formed part of Britain's coastal defense in World War II. The functions once concentrated inside a fort were distributed between sensors, weapons, and aircraft bases, making the overall system harder to disable.