name of the Security Service, and is included in the agency's logo and web address. MI6 is included as an alias on the Secret Intelligence Service website, though the official abbreviation, SIS, is predominant. While the names remain, the agencies are now responsible to different departments of state, MI5 to the Home Office, and MI6 the Foreign Office. Directors of Military Intelligence Directors of Military Intelligence have been: Deputy Quartermaster General, Intelligence Branch 1873–1878 Patrick Leonard MacDougall 1878–1882 Archibald Alison 1882–1886 Aylmer Cameron (Assistant Quartermaster General, Intelligence Branch) 1886–1888 Henry Brackenbury Director of Military Intelligence 1888–1891 Henry Brackenbury 1891–1896 Edward Francis Chapman 1896–1901 John Charles Ardagh Director General of Mobilisation and Military Intelligence 1901–1904 William Nicholson Director of Military Operations 1904–1906 James Grierson 1906–1910 Spencer Ewart 1910–1914 Henry Wilson 1914–1915 Charles Callwell Director of Military Intelligence 1915–1916 Charles Callwell 1916–1918 George Mark Watson Macdonogh 1918–1922 William Thwaites Director of Military Operations and Intelligence 1922–1923 William Thwaites 1923–1926 John Burnett-Stuart 1926–1931 Ronald Charles 1931–1934 William Henry Bartholomew 1934–1936 John Greer Dill 1936–1938 Robert Hadden Haining 1938–1939 Henry Royds Pownall Director of Military Intelligence 1939–1940 Frederick Beaumont-Nesbitt 1940–1944 Francis Henry Norman Davidson 1944–1945 John Sinclair 1945–1946 Freddie de Guingand 1946–1948 Gerald Templer 1948–1949 Douglas Packard 1949–1953 Arthur Shortt 1953–1956 Valentine Boucher 1956–1959 Cedric Rhys Price 1959–1962 Richard Eyre Lloyd 1962–1965 Marshall St John Oswald References Sources Further reading The DMI in World War I: Link Military intelligence agencies Defunct United Kingdom intelligence agencies Military communications of the United Kingdom War Office War Office in World War II British intelligence services of World War II