Brownstone Battery was an emergency battery built in 1940 and decommissioned in 1956. It is an extremely well preserved battery of this period, with almost all the features remaining apart from the barrack buildings. The battery layout, although not conventional, would have been easily understood by a Royal Artillery Gunner of 1900. It therefore provides a good example of how the design and layout of batteries changed little over the proceeding century.
The battery was built in 1940 at Forward Point covering the Dart Estuary. It was built to mount two 6-inch BL guns which were positioned at different heights on the slope overlooking the sea. The Upper Gun in positioned just below the Battery Command Post, while the lower gun sited just above the two Searchlight Emplacements. There is a narrow gauge track system of about 30 metres linking the lower 6-inch gun emplacement to the Cartridge Store. The Upper Emplacement is linked by a covered way (concrete trench) of about 20 metres to the Shell and Cartridge Stores.
