[Republican soldiers on hillside, Río Segre, Aragón front, near Fraga, Spain]

[Crowd of soldiers at farewell ceremony for the International Brigades, Les Masies, Spain]

[Cheering spectators at the farewell ceremony for the International Brigades, Barcelona]

[Men walking in the street during the farewell ceremony for the International Brigades, Barcelona]

[Man carrying boy in the street during the farewell parade for the International Brigades, Barcelona]

[Soldiers with donkeys transporting munitions over a wooden bridge, Río Segre, Aragón front, near Fraga, Spain]

[The battalion's political commissar and commander, Rio Segre, Aragón front, near Fraga, Spain]

[Soldiers walking on a hill, preparing for battle, Río Segre, Aragón front, near Fraga, Spain]

[Wounded Republican soldier in stretcher surrounded by comrades, Río Segre, Aragón front, near Fraga, Spain]

[Republican soldiers running, Río Segre, Aragón front, near Fraga, Spain]

[Republican soldiers helping wounded comrade, Río Segre, Aragón front, near Fraga, Spain]

[Republican soldier carrying wounded comrade on his back, Río Segre, Aragón front, near Fraga, Spain]

[Republican soldiers helping wounded comrades, Río Segre, Aragón front, near Fraga, Spain]

[Downed German plane on display in Passeig de Gracia, Barcelona]

[Refugee transit center, Barcelona]

[Clown entertaining children, Barcelona]

[Clown entertaining children, Barcelona]

[People watching planes, Barcelona]

[People watching planes, Barcelona]

[People watching planes, Barcelona]

[People watching planes, Barcelona]

[People watching planes, Barcelona]

[Spanish refugees near the French border, north of Barcelona]

[Journalist Herbert Matthews and two colleagues, Barcelona]