"Gino Baumann is self-taught with progressive ideas, whose interest in international brigades comes as a child by the influence of his father. Then he made several tabajos of international cooperation in the service of the Swiss government, which put him in contact with some Latin American countries. This aroused his interest in the presence of Latin Americans in the Spanish Cicil war. He has stored archival and bibliographic information for twenty years, which enabled the first publication of this book in the year 1997
This edition incorporates the new contributions of the works that have appeared in recent years, and establishes a number of volunteers that exceeds 2,500 soldiers… "