SZT2985934: Interrogating an Italian prisoner of war, 1915 (b/w photo) / Bridgeman Images

SZT2985949: Austrian prisoners of war in Russia (b/w photo) / Bridgeman Images

SZT2985951: Interned sailors on Gotland, 1915 (b/w photo) / Bridgeman Images

SZT2985954: German refugees peeling potatoes, 1915 (b/w photo) / Bridgeman Images

SZT2985955: Interned sailors in Gotland, 1915 (b/w photo) / Bridgeman Images

SZT2985956: Interned Russian students, 1914 (b/w photo) / Bridgeman Images

SZT2985960: Belgian woman with a gun, 1914 (b/w photo) / Bridgeman Images

SZT2985966: Torpedo boat Muavenet arrives at a harbour, 1915 (b/w photo) / Bridgeman Images

SZT2985969: German fighter pilots with tents housing their planes, 1916 (b/w photo) / Bridgeman Images

SZT2985978: German military camp in Syria, 1917 (b/w photo) / Bridgeman Images

SZT2985979: British tank 'Lotte' on the Western Front of the First World War (b/w photo) / Bridgeman Images

SZT2985992: Mass grave of the First World War (b/w photo) / Bridgeman Images

SZT2985996: Military records archive in Berlin during the First World War (b/w photo) / Bridgeman Images

SZT2986001: Soldier engraving inscriptions, 1915 (b/w photo) / Bridgeman Images

SZT2986010: Scene from 'Shock troop', 1934 (b/w photo) / Bridgeman Images

SZT2986015: Scene from a German war movie (b/w photo) / Bridgeman Images

SZT2986019: Premiere of 'Der Mond' in Munich, 1939 (b/w photo) / Bridgeman Images

SZT2986022: Oshima Hirosho with Arthur Axmann, 1941 (b/w photo) / Bridgeman Images

SZT2986028: Russian machine gun unit, 1915 (b/w photo) / Bridgeman Images

SZT2986029: Aerial shot of the fortress of Dünamünde (Daugavgriva) (b/w photo) / Bridgeman Images

SZT2986040: Budapest vigilance committee, 1914 (b/w photo) / Bridgeman Images

SZT2986045: German soldiers at some hot springs in Greece, 1917 (b/w photo) / Bridgeman Images

SZT2986046: First World War: Hostilities in Greece (b/w photo) / Bridgeman Images

SZT2986047: Unloading of French fighter planes in Salonika, 1915 (b/w photo) / Bridgeman Images

SZT2986053: Crossing the Danube, 1916 (b/w photo) / Bridgeman Images

SZT2986056: Repair of lanes in Serbia, 1915 (b/w photo) / Bridgeman Images

SZT2986069: French army camp in Greece, 1916 (b/w photo) / Bridgeman Images

SZT2986071: Allied troopships, 1916 (b/w photo) / Bridgeman Images

SZT2986074: French soldiers with an armed motorbike (b/w photo) / Bridgeman Images

SZT2986091: Italian prisoners of war, 1917 (b/w photo) / Bridgeman Images

SZT2987349: Glider 'Rhönadler' in the Rhoen Mountains, 1935 (b/w photo) / Bridgeman Images

SZT2987368: Flying machine built by Marquis d'Equeville, 1909 (b/w photo) / Bridgeman Images

SZT2987374: Goedecker's “Stormvogel”, 1912 (b/w photo) / Bridgeman Images

SZT2987386: "Mars" Pfeil-doubledecker built by DFW at the Berlin Flight Week, 1913 (b/w photo) / Bridgeman Images

SZT2987392: Maurice Collieux in a flying machine in France, 1911 (b/w photo) / Bridgeman Images

SZT2987405: Aviation pioneers next to a homemade flying machine, 1908 (b/w photo) / Bridgeman Images