The action was planned the year before but technical problems, such as the fuel capacity of the planes, delayed it. The first trial was attempted on the 2 August 1918, but the aircraft returned due to heavy fog. The second trial, on 8 August 1918, was cancelled due to strong wind, while the last one, on 9 August, was successful. They flew over Vienna and dropped 50,000 leaflets on a three-colored card (green, white, and red: the colors of the Italian flag). They were written by D'Annunzio himself and were not translated into German. They read: These were also translated into German.