The essay reconsiders the role of the socialists in the Resistance in Rome, showing that it was by no means marginal. During the Nazi occupation, in conditions of grave danger, the socialist Bruno Buozzi, secretary of the General Confederation of Labor when Fascism took power, entered into delicate negotiations to reconstitute the union, committing himself so that it was unitary and therefore included communists, socialists and Christian Democrats. In Rome occupied by the Nazis, every form of disobedience acquired the characteristics of an opposition, a real resistance which, among other things, was organized by the military apparatuses of the Socialist and Communist parties. Sabotage and disturbance actions were organized daily to make life impossible for the enemy, who reacted with tremendous reprisals. Immediately after the arrival of the Allies in Rome, the union was reconstituted but the agreement was backdated in homage to Buozzi, murdered by nazis.