[Spanish girl embracing volunteer during farewell parade for the International Brigades, Barcelona, Spain]

[Man fighting a fire ignited in a gasoline depot by a Nationalist air raid, Bilbao, Spain]

[Soldier walking a cow through a town, Aragon, France]

[Customs officer on the road to Llivia, France-Spain border]

Child victims: Bodies gathered after the raids on Barcelona

[Citizens with their personal belongings in the street, waiting to be evacuated, Bilbao, Spain]

[Republican soldiers crouching in grass with rifles, Rio Segre, Aragon front, near Fraga, Spain]

[General Juan Modesto speaking at a farewell ceremony for the International Brigades, Les Masies, Spain]