Belgian military cyclists shooting at a German plane, First World War, 1914-1918, (c1920). '...sniping at a German aeroplane that is flying over Ostend. A high-speed aircraft travels more than 100 feet in one second: so the difficulty of hitting it with a rifle-bullet can be imagined.' From "The Great World War - A History" Volume I, edited by Frank A Mumby. [The Gresham Publishing Company Ltd, London, c1920]