International volunteers who fought for the Republic of Spain against General Franco

[Refugees walking on the road from Barcelona at the French border, Spain]

[Group of children sitting on church steps waiting to evacuate, Bilbao, Spain]

[Refugee on the road fleeing a Nationalist air raid, near Cerro Muriano, Spain]

[Republican soldier carrying a wounded soldier, Rio Segre, Aragón front, near Fraga, Spain]

[Soldier saluting at farewell ceremony for the International Brigades, Les Masies, Spain]

[Republican soldiers crouching in grass, Río Segre, Aragón front, near Fraga, Spain]

[Republican soldiers making a command call, Río Segre, Aragón front, near Fraga, Spain]