[Republican soldiers before the Battle of Rio Segre, near Fraga, Aragon front, Spain]

[American troops landing on Omaha Beach, D-Day, Normandy, France]

[Men holding a rope and pulling a barge with people along the shore, near Zhengzhou, China]

[Crowds watching the air battle between Japanese and Chinese planes over Hankou, China]

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

[Crowds watching the air battle between Japanese and Chinese planes over Hankou, China]

[Crowds watching the air battle between Japanese and Chinese planes over Hankou, China]

[Men next to a large fence, Hankou, China]