On June 3, two Austro-Hungarian seamen of Italian origin decided to desert and stole a Lohner L seaplane, which they flew across the Adriatic Sea, landing near Fano, where they were captured; Briganti, along with lieutenant Aldo Pellegrini, was sent from Ancona with the task of recovering the aircraft.

[1][2][3][4] After the end of the war, Briganti joined the forces of poet Gabriele D'Annunzio during their occupation of Fiume, as a seaplane pilot, from February 4 to September 12, 1920.

In 1923, with the establishment of the Regia Aeronautica, he was among the officers who chose to leave the Navy to join the new armed force, with the rank of Captain.

From 1928 to 1930 he was the commander of the Seaplane Experimentation Center of Vigna di Valle, and from 1930 to 1933 he was aide-de-camp to King Victor Emmanuel III.

In late January 1945 the camp was evacuated due to the advance of the Red Army; during the forced march through the snow, in which six generals were shot by the SS guards for not being able to keep up pace with the column, Briganti and General Francesco Antonio Arena managed to escape and hide in a Polish farm, but were discovered by two Soviet soldiers who mistook them for German collaborators, and shot them.