[Republican soldiers firing machine gun, University City, Madrid]

[Republican soldiers aiming rifles through a window, University City, Madrid]

[Wounded Republican soldier walking with the help of a comrade, University City, Madrid]

[Republican soldiers firing machine guns, University City, Madrid]

[Republican soldiers playing chess in the trenches, University City, Madrid]

[Medical students in the hospital laboratory at Hadassah University, Jerusalem, Israel]

[Republican soldiers behind barricade made of sandbags and luggage, University City, Madrid]

[Republican soldiers firing machine guns, University City, Madrid]

[Republican soldier firing riffle from desk, University City, Madrid]

[Republican soldier firing gun from desk, University City, Madrid]

[Wounded Republican soldiers being carried by fellow comrades, University City, Madrid]

[Republican soldiers behind barricades made of luggage, University City, Madrid]

[Medical students working in the Hadassah University hospital laboratory, Jerusalem, Israel]

[Republican soldiers firing machine gun out the window, University City, Madrid]

[Republican soldier firing gun through peephole, University City, Madrid]

[Republican soldier aiming his rifle through a window, University City, Madrid]

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

[Republican soldiers firing through window, University City, Madrid]

[Two Republican soldiers aiming gun out a window of the Medical School building, University City, Madrid]

[University City, Madrid]

[Trenches, University City, Madrid]

[Militiamen eating lunch, University City, Madrid]

[Laboratory destroyed by bombing, University City, Madrid]

[Militiamen eating lunch, University City, Madrid]