I love George Clarke’s Restoration Man television show, and was fascinated by a recent episode that showed here in New Zealand following two separate projects to restore a Martello tower. I’d heard of them, but had no idea of their history, and once I looked it up, I knew I’d found the exact object to fill a plot hole in The Realm of Silence.

Martello towers are small round forts built along the southern and eastern of England, with a few in Ireland and Scotland. They were based on towers built in Corsica to repel the Barbary Pirates. The British navy was very impressed when they were unable to overcome one at a place called Mortello Point, though it fell to a land assault.

The war with France

So in the late 18th and early 19th century, when invasion from France was a real threat, the government embarked on a plan to build the towers, each around 40 feet tall. They were garrisoned by 15 to 24 soldiers and an officer, with food and water, sleeping quarters, and a gun on a swivel to repel sea or land invaders.

They could be accessed only through a door some 16 feet above the ground, accessed by a ladder, and were designed to withstand heavy attack.

140 were built, but the invasion plans receded with the destruction of the French fleet at Trafalgar and had faded by 1812 [edited after JSMF2’s comment, below], and they never had to be put to their intended use.