[Republican soldiers crouching in grass, Rio Segre, Aragon front, near Fraga, Spain]

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

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

[Republican soldier holding a rifle, Rio Segre, Aragón Front, near Fraga, Spain]

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

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

[Republican soldiers storming forward, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldiers installing artillery, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldiers installing artillery, Rio Segre, Aragón Front, near Fraga, Spain]

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

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

[Republican soldiers sitting on hillside, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldiers sitting in trenches, Rio Segre, Aragón Front, near Fraga, Spain]

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

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

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

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

[Explosion in the distance during battle, Rio Segre, Aragón Front, near Fraga, Spain]

[Foreign soldiers with arms full of bouquets, farewell parade for the International Brigades, Barcelona, Spain]

[Republican officer on call to command, Rio Segre, Aragón front, near Fraga, Spain]

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

[Robert Capa (left) and Hans Marchwitza (center), near Peñarroya, Córdoba front, Spain]

[Republican soldiers looking for Nationalist snipers from ruins of a government building, Teruel, Spain]

[Marineros sitting in caves and crevices, Rio Segre, Aragón front, near Fraga, Spain]