11. Two young girls help assemble Soviet submachine guns during the Siege of Leningrad, 1943.
12. A 2 ton shell from the Karl-Gerät’s 60 cm mortar explodes on the top floor of the Prudential building in Warsaw, taken by Polish Home Army soldier Sylwester Braun Kris, Poland, 28 August 1944.
13. One of the first underwater photographs, taken by French marine biologist Louis Marie Auguste Boutan, 1899.
14. Rudolf, Crown Prince of Austria dressed as his ancestor, Rudolf I, circa the 1880s.
15. Princess Diana as a 19-year-old Kindergarten teacher in 1980.
16. Kids learning how to act in case of a chemical attack, Kineshma Russia, 1999.
17. North Korean dictator Kim Il-sung (center) meets a German family, during his visit to East Germany, 1984.
18. Dr. Martin Luther King Jr. receives the Nobel Peace Prize from the hands of Gunnar Jahn, Chairman of the Nobel Committee, in Oslo, Norway, on 10 December 1964.
The 35-year-old Reverend King was the youngest man ever to receive the prize.
19. Crowds in Warsaw, Poland, cheer the British declaration of war, September 1939.
20. A soldier comforts another infantryman whose friend had been KIA.
A corpsman fills out casualty tags in the background, Haktong-ni area, Korea, 1950.