Longo became a Communist in 1921, left Italy in 1926, was attached to the International Brigades in Spain, and in 1940 was handed over by the French to the Fascist régime. Freed in 1943, he helped organize and lead the Partisan forces in northern Italy, notably the Garibaldi Brigades. This is a circumstantial record of their contribution to the liberation of Italy. Longo is today one of the chiefs of the Italian Communist Party. Maps, illustrations and bibliography.