[Major Milton Wolff, commander of the American Abraham Lincoln Brigade, near Falset, Spain]

[Two men lying in front of a tent, French Internment Camp, Le Barcarès, Spain]

[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]