After the advent of
Nazism in Germany, the paper began to call for insurgency, revolutionary action, and military action in order to stop the Italian and German regimes before they plunge Europe into a tragic war. They wrote that Spain seemed the destiny of all fascist states. In July 1936, the
Spanish Civil War erupted as the fascist-monarchical led army attempted a coup d'état against the republican government of the
Popular Front. Rosselli helped lead the Italian anti-fascist supporters of the
Spanish Republican Army, criticizing the neutrality policy of France and Britain, especially as Italy and Germany sent arms and troops in support of the rebels. In August, Rosselli and the GL organized their own brigades of volunteers to support the
Second Spanish Republic. With
Camillo Berneri, Rosselli headed the
Matteotti Battalion, a mixed volunteer unit of Italian
anarchist, liberal, socialist, and
communist. The unit was sent to the
Aragon front, and participated in a victory against
Francoist forces in the
Battle of Monte Pelato. Speaking on Barcelona Radio in November, Rosselli made famous the slogan
Oggi in Spagna, domani in Italia ("Today in Spain, tomorrow in Italy"). After falling ill, Rosselli was sent back to Paris, from where he led support for the anti-fascist cause, and proposed an even broader "
popular front" while still remaining critical of the
Communist Party of Spain (PCE) and the Soviet government of
Joseph Stalin. In 1937, Berneri was killed by Communist forces during a purge of anarchists in
Barcelona. With the fall of the Spanish Republic in 1939, GL partisans were forced to flee back to France. == Murder ==