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

[Crowds running for shelter when the air-raid alarm sounded, Bilbao, Spain]

[Republican soldiers in crevices, Rio Segre, Aragon Front, near Fraga, Spain]

[Republican soldiers saluting on a tank, Mora de Ebro, Aragon front, Spain]

[Marineros preparing for attack, Rio Segre, Aragon Front, near Fraga, Spain]

[Woman nursing a baby at a land reform meeting, near Badajoz, Extremadura, Spain]

[Officer speaking to a group of Republican soldiers before an attack, Córdoba front, Spain]

[Republican soldier and woman during the battle of Mount Solluve, Bilbao front, Spain]