[Funeral procession for victim killed on the day of the presidential elections, Mexico City]

[American paratrooper lying on the ground next to his parachute, which is caught on a wire, near Wesel, Germany]

[Woman amid ruins after a Japanese air raid, Hankou, China]

[Young girl at refugee transit center, Barcelona]

[American troops landing on Omaha Beach, D-Day, Normandy, France]

[Contact sheet of images of Leon Trotsky lecturing Danish students on the history of the Russian Revolution, Copenhagen]

[Explosion in the distance during battle, 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 listening to their commander give a speech, Rio Segre, Aragon Front, near Fraga, Spain]

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

[Republican soldier walking up a hill, Rio Segre, Aragon Front, near Fraga, Spain]

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

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

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

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

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

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

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

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

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

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

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

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

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