[Republican guard sits on snow-covered rock wall, Teruel, Spain

[Republican soldier standing in bombed building, Teruel, Aragón front, Spain]

[Republican soldiers standing watch by a window, Teruel, Aragón front, Spain]

[Republican tank stuck in the snow, Teruel, Aragón front]

[Republican soldiers and tank in city, Teruel, Aragón front, Spain]

[Two Republican soldiers in a lab, University City, Madrid]

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

[Civilians take shelter in the subway during the bombing, Madrid]