The International Brigade was the name given to the band of volunteers and mercenaries who travelled to Spain to fight against the fascist forces in the Spanish civil war. The brigade included such luminaries as George Orwell, who wrote his book Homage to Catalonia about his experiences in the war.
... with Michelet and others, formed the "centre," midway between Erdmann and Gabler on the one hand, and the "extreme left" represented by Strauss, Feuerbach and Bruno Bauer. ...