[Soldier aiming rifle towards water from sand bunker, near Guangzhou, China]

[Republican soldier in a room, aiming his rifle through a hole in the wall, University City, Madrid]

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

[Republican soldier with rifle on destroyed bridge, Rio Segre, Aragon front, near Fraga, Spain]

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

[French air school, students marching during military drill behind bayonet rifles in Istres, France]

[French air school, students marching during military drill behind bayonet rifles in Istres, France]

[Members of the International Brigades, Madrid]