 St. George's also saw the construction of Fort George and Fort William as well as seaward artillery batteries at Buildings Bay and on St. David's Island.In the 1820s, Bermuda's only Martello tower was built to cover Ferry Reach.In the aftermath of the American Civil War, concerns over a landward attack on the Royal Naval Dockyard led to large tracts of the central parish of Devonshire being acquired by the British military.