[Men of the International Brigades engaged in house-to-house fighting around the slaughterhouses near the University City, Madrid]

[Men of the International Brigades catapulting grenades in the vicinity of the slaughterhouses near the University City, Madrid]

[Republican soldiers, trenches, University City, Madrid]

[Soldiers in Republican bunkers around the Clinical Hospital, one of the principal bastions of the Nationalist rebels in the University City, Madrid]

[Woman standing amid rubble of buildings destroyed by Nationalist air raids, Madrid]

[People living on the platforms of subway stations in the aftermath of Nationalist air raids, Madrid]

[Refugees from the Nationalist air raids preparing to leave the city, Madrid]

[Three children outside bullet-riddled building following an air raid, 10 Peironcely Street, Madrid]