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

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

[Republican soldiers carrying field telephone equipment, Rio Segre, Aragon Front, near Fraga, Spain]

[Republican soldiers installling anti-aircraft artillery, Rio Segre, Aragon Front, near Fraga, Spain]

[Republican soldiers carrying stretcher up the hillside, Rio Segre, Aragón front, near Fraga, Spain]

[Asturian miners making hand grenades with dynamite by wrapping them in newspaper and tin cans, Oviedo, Spain]

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

[Republican machine gunners hitting the retreating army, Rio Segre, Aragón front, near Fraga, Spain]

[Grave of Sirval and Asturias story, San Esteban de las Cruces front, near Oviedo, Spain]

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

[Republicans at the last line of fire before the summit, Rio Segre, Aragón front, near Fraga, Spain]

[Republican soldiers on a staircase during the battle for this strategically located hilltop town, Teruel, Aragón front, Spain]

[Republican soldiers carrying a stretcher up the hillside, Río Segre, Aragón front, near Fraga, Spain]

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

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

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

Child victims: Bodies gathered after the raids on Barcelona

[Republican soldiers riding in truck, Madrid]

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

[Ernst Busch, Erich Weinert and other attendees at the Second International Congress of Writers for the Defense of Culture, Valencia, Spain]

[Two loyalist soldiers leaning on a tree while listening to an officer give a pep talk, Andalusian front, Spain]

[Republican soldiers walking along mountain preparing for battle, Rio Segre, Aragon front, near Fraga, Spain]

[Republican soldiers run along the mountain preparing for battle, Rio Segre, Aragon front, near Fraga, Spain]

[Soldier talking on the phone while reading a map with a comrade, Rio Segre, Aragón Front, near Fraga, Spain]