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Martello tower


 

Martello towers are small defensive forts built by the British Empire at the time of the Napoleonic Wars. They stand about 40 feet (12m) high (with two floors) and had a garrison of one officer and 25 men. Their round structure and thick walls of solid masonry made them immensely resistant to cannon fire, while their height made them an ideal platform for a single heavy artillery piece, mounted on the flat roof and able to traverse a 360° arc. A few were surrounded by a moat for extra defence.

See also