Durruti Column
In Spain the newly elected Popular Front organized the People's Olympiad in Barcelona as a response to the 1936 Summer Olympics being hosted in Nazi Germany. She travelled south to attend as a representative of Arbeiterschwimmclubs (Worker's Swim Club) but due to the outbreak of the Spanish Civil War the games never occurred. Impressed by the strength and size of the working class anarchist movement in Catalonia and the successes of the Spanish Revolution, Clara joined the Durruti Column; a column of anarchists organized to fight against the Fascists. The militia marched from Barcelona to support the Republicans on the Aragon front, where Clara was joined by Paul Thalmann.