Giovanni C. Cattini is a young historian who offers an itemized study on Berneri's Guerra di Classe: he refers the first moments and also the definitive crisis of this newspaper after Berneri¿s assassination in May 1937. This is not the first work devoted to this militant platform has been annalysed but Cattini's approach observes not only the ideological and political contest maintained with other sectors of the libertarian movement but the contrived militant tools that have allowed its existance during the Spanish Civil War.