[Soldier exiting armored car, Aragon, Spain]

[Three soldiers in trenches aiming their guns, Huesca, Aragon, Spain]

[Manuel Grossi Mier of the POUM speaking from a balcony, Aragon, Spain]

[Republican militiaman, near Huesca, Aragón front, Spain]

[Soldier of the Partido Obrero de Unificación Marxista (P.O.U.M.) with dove, Aragón, Spain]

[Wheat farming, Aragon front, Spain]

[Women and children saying farewell to Republican militiamen before the departure of a troop train for the Aragon front, Barcelona, Spain]

[Loyalist soldiers standing in line, University City, Madrid]

[Two Republican soldiers greeting each other, Madrid]

[Young Republican soldier resting on his rifle, Madrid]

[Loyalist soldiers eating, Madrid]

[Republican soldier and woman pumping water together, Madrid]

[Republican soldier writing a letter, Madrid]

[Loyalist soldiers reading papers, Madrid]

[Loyalist soldiers reading papers, Madrid]

[Loyalist soldier lying in the trenches, near Madrid]

[Men walking in the street during the farewell celebration for the International Brigades, Barcelona, Spain]

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

[Notes with thanks shower soldiers at farewell parade for the International Brigades, Barcelona, Spain]

[Notes with thanks shower soldiers at farewell parade for the International Brigades, Barcelona, Spain]

[Confetti showers the soldiers during the farewell parade for the International Brigade, Barcelona, Spain]

[Cheering crowds, farewell parade for the International Brigades, Barcelona, Spain]

[Crowd in the street during the farewell parade for the International Brigades, Barcelona, Spain]

[Dolores Ibárruri Gómez, La Pasionaria, and Jose Diaz at the farewell parade for the International Brigades, Barcelona, Spain]