José Buenaventura Durruti Dumange was a Spanish insurrectionary, anarcho-syndicalist militant involved with the CNT and the FAI in the periods before and during the Spanish Civil War of 1936–1939. Durruti played an influential role during the Spanish Revolution of 1936 and is remembered as a hero in and by the anarchist movement.

The Confederación Nacional del Trabajo is a Spanish confederation of anarcho-syndicalist labor unions, which was long affiliated with the International Workers' Association (AIT). When working with the latter group it was also known as CNT-AIT. Historically, the CNT has also been affiliated with the Federación Anarquista Ibérica ; thus, it has also been referred to as the CNT-FAI. Throughout its history, it has played a major role in the Spanish labor movement.