[Group of women and children standing next to rubble, Madrid]

[Two women standing in street strewn with rubble, Madrid]

[Refugees from the Nationalist air raids preparing to leave the city, Madrid]

[Soldier of the International Brigade and woman pumping water together, Madrid]

[Republican soldier in bunker, Madrid]

[Soldier lying on the ground behind Republican lines, Madrid]

[Refugees from Málaga, Murcia, Spain]

[Refugee from Málaga leaning on pole, Murcia, Spain]

[Republican soldiers crouching behind a car during the battle of Mount Solluve, Bilbao front, Spain]

[Republican soldier in the woods during the battle of Mount Sollube, Bilbao front, Spain]

[Civilians running in the street during air raid siren, Bilbao, Spain]

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

[Republican soldiers in trenches during the battle for this strategically located hilltop town, Teruel, Aragón front, Spain]

[Republican soldiers inside the Governor's Palace, the last major bastion of Nationalist resistance in this stategically located hilltop town, Teruel, Aragón front, Spain]

[Man carrying a wounded boy, Teruel, Aragón front, Spain]

[Farewell ceremony for the International Brigades, Les Masies, Spain]

[Farewell ceremony for the International Brigades, Les Masies, Spain]

[American Abraham Lincoln Brigade, led by Milton Wolff (center, without cap), at the farewell ceremony for the International Brigades, near Falset, Spain]

[Remains of bridge bombed by Nationalist rebels in an attempt to trap the Republicans, Rio Segre, Aragón front, near Fraga, Spain]

[Republican soldiers listening to their commander give a speech, Rio Segre, Aragón front, near Fraga, Spain]

[Officers and commissars of the Marineros battalion look at the heights they must take, Rio Segre, Aragón front, near Fraga, Spain]

[Officer talking on a telephone at a field headquarters during the Republican offensive along the Rio Segre, Aragón front, Spain]

[Republican soldiers, Rio Segre, Aragón front, near Fraga, Spain]

[Republican soldier, cigarette still in his mouth, is later among the seriously wounded, Rio Segre, Aragón front, near Fraga, Spain]