The digital collection World War I Maps & Aerial Photography is an initiative of the McMaster University, Hamilton, Ontario. The collection contains some 400 maps of the fronts in France and Belgium, most of them made by the British Ordnance Survey, including trench maps. The scales of most maps are 1:10,000, 1:20,000 and 1:40,000. In a second part of this section, Other theatres of war, you can find maps for Europe, the Middle East, Africa and Russia. The second section of the digital collection is formed by some 500 aerial photographs, most of them taken in 1917 and 1918 by the Royal Air Force. In the section References & Links you will find some titles of relevant literature and some links to other websites with maps concerning the First World War. A number of case studies help using the maps and photographs.