[Republican soldiers in a trench, Aragón front, Spain]

[Republican soldier poking through roof, Spain]

[Republican soldiers standing with their guns, Brunete, Spain]

[Outdoor mass, Berriatua, Basque Country, Spain]

[Outdoor mass, Berriatua, Basque Country, Spain]

[Tram workers reading "Regards," Madrid, Spain]

[Children jumping rope on the sidewalk, Barcelona, Spain]

[Portrait of Raphael Alberti, wearing a medal, Spain]