[Civilians sleeping in the subway during the bombing, Madrid]

[Group of men and boys watching Nationalist air raid, Madrid]

[Militiamen digging trenches, near Barcelona, 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]