I've
put Grain Tower in the Miscellaneous section, as it was built after
the Napoleonic era, but before the advent of the First World War, and
also saw use in the Second World War.
Grain Tower was built in 1855 and was based loosely on the Martello
Tower design of the earlier Napoleonic period. It was fortified with
the addition of an upper level in 1912 to house two 4.7inch
quick-firing guns. The tower then became an anti-torpedo and
anti-submarine battery for the First World War. In 1940 the Tower had
a further refit to accommodate a twin 6pdr quick-firing gun. 29 men
were posted here during that time. The tower was finally disarmed and
put out of commission in 1946.
To see the full size pictures, right click than click on go full size.