[Republican soldier watching bombing planes, Teruel, Spain]

[Republicans soldiers carrying man on a stretcher, Teruel, Spain]

[Balcony with banner, farewell ceremony for the International Brigades, Les Masies, Spain]

[Members of the Abraham Lincoln Brigade, farewell ceremony for the International Brigades, Les Masies, Spain]

[Members of the Abraham Lincoln Brigade, farewell ceremony for the International Brigades, Les Masies, Spain]

[Three soldiers sit at farewell ceremony for the International Brigades, Les Masies, Spain]

[Sitting volunteer and dog, farewell ceremony for the International Brigades, Les Masies, Spain]

[Large crowd of soldiers during the farewell ceremony for the International Brigades, Les Masies, Spain]

[Soldiers during the farewell ceremony for the International Brigades, Les Masies, Spain]

[Soldier saluting during farewell ceremony for the International Brigades, Les Masies, Spain]

[American volunteers at the farewell ceremony for the International Brigades, Les Masies, Spain]

[Spectators at farewell parade for the International Brigades, Barcelona, Spain]

[Men and women preparing for farewell ceremony for the International Brigades, Les Masies, Spain]

[Soldiers walking on a hill, preparing for attack, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldiers preparing for battle, Rio Segre, Aragon front, near Fraga, Spain]

[Republican soldiers running, Rio Segre, Aragon Front, near Fraga]

[Republican soldiers running, Rio Segre, Aragón front, near Fraga, Spain]

[Republican soldiers running, Rio Segre, Aragón Front, near Fraga, Spain]

[Republican soldiers preparing for battle, Rio Segre, Aragon front, near Fraga, Spain]

[Republican soldiers walking along mountain preparing for battle, Rio Segre, Aragon front, near Fraga, Spain]

[Republican soldiers run along the mountain preparing for battle, Rio Segre, Aragon front, near Fraga, Spain]

[Soldiers preparing for battle, Rio Segre, Aragón Front, near Fraga, Spain]

[Soldiers preparing for battle, Rio Segre, Aragón Front, near Fraga, Spain]

[The battalion's political commissar and commander, Rio Segre, Aragón front, near Fraga, Spain]