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

[Republican soldier hiding behind rocks during battle, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldier hiding behind rocks during battle, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldier hiding behind rocks during battle, Rio Segre, Aragón Front, near Fraga, Spain]

[Wounded Republican soldier on stretcher surrounded by standing comrades, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldiers helping injured comrade through the mountainside, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican looking out from behing a stone wall, Rio Segre, Aragón front, near Fraga, Spain]

[Republican soldiers helping injured comrade through the mountainside, Rio Segre, Aragón front, near Fraga, Spain]

[Republican soldier carrying a wounded comrade on his back, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldier carrying a wounded comrade on his back, Rio Segre, Aragón Front, near Fraga, Spain]

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

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

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

[Republican soldiers working on a wooden bridge destroyed by the Fascists, Rio Segre, Aragon front, near Fraga, Spain]

[Republican soldiers helping injured comrade through the mountainside, Rio Segre, Aragón front, near Fraga, Spain]

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

[Men of the semi-Trotskyist POUM (Partido Obrero de Unificación Marxista) militia, Leciñena, Aragón front, Spain]

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

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

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

[Republican soldier amid rubble during the battle for this strategically located hilltop town, Teruel, Aragón front, Spain]

[Soldier hiding behind stone wall during the battle, Rio Segre, Aragón front, near Fraga, Spain]

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

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