On 9 August 1918, Italian writer Gabriele d’Annunzio and pilot Natale Palli flew their aeroplane over Vienna, dropping thousands of leaflets and three large posters. This photograph shows them prior to take-off. The leaflets and posters explained the views of the Entente and its promise of long-lasting peace to its enemies if they surrendered. In 1915, Italy had entered the war on the side of the Entente, which had previously been made up of Britain, France and the Russian Empire.
The leaflet drop made no difference from a conflict point of view, but it created wide ripples in Italy and the rest of the world. It also had a considerable psychological effect, helping to increase the distrust of Italians towards the Austrian people, who many saw as responsible for too long and bloody a conflict.