as it curves away in a south westerly direction from the junction of City Way and Marconi Way. World wars After completion and until the outbreak of the First World War, Fort Bridgewoods was only sporadically garrisoned. In the early years of the 20th century the Royal Engineers deliberately mined and blew up one corner of the fort during a field exercise. With repairs undertaken the fort slipped into obscurity until trials with gun laying radar were undertaken at the Fort in the late 1930s. With radar installed, Bridgewoods served as headquarters for anti-aircraft guns in the Thames Estuary with the two flanking forts of Horsted and Borstal being among the most up-to-date anti-aircraft batteries in Britain. Nuclear age With the development of the nuclear bomb, new protected headquarters were built at Bridgewoods in the early 1950s. Shortly after completion Anti Aircraft Command was disbanded and the site used for Civil Defence preparation and training. In 1960 the protected headquarters became the regional HQ for London (south) and remained in use until the early 1970s. In 1975 the site was sold to a property developer who quickly demolished the fort and bunker. The site remained empty for a number of years and is now a Royal Mail depot. Part of the fort is also under UK Vending Ltd, whose address is Fort Bridgewood. References External links Victorian Forts data sheet 18 in gauge railways in England Military history of Kent Military railways in the United Kingdom Palmerston Forts Forts in Medway Y service