American servicemen on a five seater cycle, 19th May 1944. (Photo by Maeers/Fox Photos/Getty Images)





Japanese staff carrying a corpse at Unit 731 in Northeast China, date unknown. Unit 731 was a covert biological and chemical warfare research and development unit of the Imperial Japanese Army that undertook lethal human experimentation during the Second Sino-Japanese War (1937-1945) and World War II. It was responsible for some of the most notorious war crimes carried out by Japanese personnel. Unit 731 was the code name of an Imperial Japanese Army unit officially known as the Epidemic Prevention and Water Purification Department of the Kwantung Army. It was initially set up under the Kempeitai military police of the Empire of Japan to develop weapons of mass destruction for potential use against Chinese, and possibly Soviet forces. (Photo by: Pictures From History/Universal Images Group via Getty Images)





Two miniature pistols and two deadly cigarette cases, developed in the Soviet Union secret police, fell into western hands after the defection of Russian intelligence Capt. Nikolai E. Khokhlov, who was instructed to used them in the assassination of Sergeyevich Okolovich, a member of the anti-Soviet organization NTS in Frankfurt, Germany, 1954. (AP Photo/Albert Gillhausen)





Chairman Frank Church, D-Idaho, of the Senate Intelligence Committee, displays a poison dart gun Sept.17,1975 as Co-Chairman John G. Tower, R-Texas, looks at the weapon during the panels probe of the Central Intelligence Agency at a Washington hearing. The committe also heard from CIA Director William E. Colby, who told them that 37 lethal poison were discovered in an agency lab. (Photo by hlg/AP Photo)





Members of the U.S. Marine Corps, Corporal Willis T Anthony, Private First Class Emmitt Shackelford, and Private First Class Eugene Purdy, and Private First Class Horace Boykin (riding bicycle)) attached to the Third Ammunition Company, take time out from supplying ammunition to the front line on Saipan, Northern Mariana Islands, in June of 1944. (Photo by National Archives)





Three Air Cadets from the RAF's Coulsdon and Purley Squadron practice 'formation flying' using bicycles with wings over the handlebars, 29th September 1942. (Photo by Hulton Archive/Getty Images)





(Original Caption) Photo shows Duke Kahanamoku, Charles Pung, Pua Keoloha, Johnny Weismuller, Harold Krueger and jack Robertson, certain point winners for Uncle Sam in the swimming event at the Paris Olympics.1924. (Phoot by Bettmann Archive)





Women observing the Solar eclipse of April 8, 1921 in Paris, France. (Photo by adoc-photos/Corbis via Getty Images)





Original caption, from India, in August of 1922: “A Gandhi procession reminds one of a carnival celebration. Volunteers in the non-cooperative movement dress in their home-woven costumes and shout 'Swaraj' (home-rule). A huge spinning wheel leads the procession as an emblem of Gandhiism”. (Photo by Bettmann Archive)





A new method of washing autos, Chicago, Illinois, September 20, 1924. Two cars at a time run through the Auto Wash Bowl to clean the mud and dirt from the wheels and axles. (Photo by Underwood Archives/Getty Images)





In the Vinohrady district of Prague, primary-school students knit and crochet for Russian aid, volunteering for the Prague Czecho-Slovak Junior Red Cross on March 8, 1922. (Photo by Library of Congress)





Expert sharpshooter and performer Annie Oakley comes out of retirement to practice for the Fred Stone Circus and Motor Hippodrome at the Mineola Fair Grounds, Long Island, N.Y., on July 27, 1922. Oakley performed in Buffalo Bill's Wild West Show from 1885 to 1902. (Photo by AP Photo)





Children bowling hoops in Hyde Park on January 1, 1922. (Photo by Topical Press Agency/Getty Images)





Radio with Speaker Plays in the Middle of a children's swimming Pool, circa 1924 (Photo by Buyenlarge/Getty Images)





A protester aims a sling shot at police in Santiago, Chile, September 1989. (Photo by Marco Ugarte/AP Photo)