of the 47th (London) Division 1914–1919, London: Amalgamated Press, 1922/Uckfield: Naval & Military Press, 2002, . Martin Middlebrook, The First Day on the Somme, 1 July 1916, London: Allen Lane 1971/Fontana, 1975, . F.W. Perry, History of the Great War: Order of Battle of Divisions, Part 5b: Indian Army Divisions, Newport: Ray Westlake, 1993, . Brig N.W. Routledge, History of the Royal Regiment of Artillery: Anti-Aircraft Artillery 1914–55, London: Royal Artillery Institution/Brassey's, 1994, . Maj C.H. Dudley Ward, The Fifty Sixth Division, 1st London Territorial Division, 1914–1918, London: John Murray, 1921/Uckfield: Naval & Military Press, 2001, . Ray Westlake, Tracing the Rifle Volunteers, Barnsley: Pen and Sword, 2010, . Online sources British Army units from 1945 on British Military History The Long, Long Trail Orders of Battle at Patriot Files David Porter's work on Provisional Brigades at Great War Forum The Regimental Warpath 1914–1918 (archive site) Land Forces of Britain, the Empire and Commonwealth (Regiments.org – archive site) Royal Artillery 1939–1945 Royal Artillery Units Netherlands 1944–45 4 Royal Fusiliers Military units and formations in London Military units and formations established in 1908 Military units and formations disestablished in 1961