William Twiss
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General William Twiss was a British Army Royal Engineer, responsible for the design of many military defences.
Dover Western Heights
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The Western Heights of Dover is a series of forts and ditches in Dover, England. They were created in the 18th and 19th centuries to augment the existing defences and protect the key port of Dover fro
The Western Heights from Dover Castle: Drop Redoubt is in the foreground, the Citadel is in the background
The entrance to the Citadel.
A caponier of the Drop Redoubt
Inside the Redoubt: soldiers' barracks (top left), guardroom (below left), officers' quarters (below right), small arms store (top right)