circa 1937: A Chinese soldier bends over the body of a fellow soldier, killed by Japanese bombs during the Sino-Japanese conflict. (Photo by Hulton Archive/Getty Images)

The signing of the Treaty, at Government House, Changchun, Manchuko, between representatives of Japan and Manchuko. The Minister Plenipotentiary from Japan, General Nobuyoshi, signs for his country, and the Premier of Manchuko, Cheng Hsiao Hsiu, signs for the new State. Also present is the Minister of Foreign Affairs for Manchuko, Hsien Cheih-Shi. (Photo by Keystone/Getty Images)

Japanese troops entering Manchuria in the wake of the so-called Mukden Incident during the Sino-Japanese War. After a bomb of unknown origin damaged the Japanese railway near Shenyang (Mukden), the Japanese Kwantung army guarding the railway used the incident as a pretext to occupy south Manchuria and eventually to set up a puppet government. (Photo by Keystone/Getty Images)

Japanese children wearing military uniform are taken to visit Shinto shrines. (Photo by Fox Photos/Getty Images)

8th February 1934: Japanese schoolgirls pounding rice to make rice cakes for soldiers in Manchuria and the poor in Tokyo. (Photo by Fox Photos/Getty Images)

1937: Japanese troops enter Tientsin, China, during the China-Japanese war. (Photo by Central Press/Getty Images)

23rd June 1939: A Japanese landing party approaching Chusan Island near the chief Port of Tinghai, China. (Photo by Keystone/Getty Images)

November 1937: A corpse lays in the ruins of Nanking station after a Japanese air raid during the Sino-Japanese conflict. (Photo by Topical Press Agency/Getty Images)

circa 1930: Some of the three hundred workmen and factory girls on strike from the Orient Mousseline Works, Kamedo, Tokyo, prepare to lunch at the strike headquarters. (Photo by Hulton Archive/Getty Images)

14th March 1934: The Imperial Cavalry Guard taking part in ceremonies for the enthronement of Pu Yi, child Emperor of China (1908 - 1911), at the specially constructed 'Temple of Heaven' in Manchukuo, the puppet state set up by the Japanses in Manchuria. Pressured by Japan into becoming chief executive of the state he was crowned Emperor K'ang Te. (Photo by Keystone/Getty Images)

circa 1935: High officials of Manchukuo, the puppet state set up by Japan in Manchuria, at the pier to see Emperor Kwangte depart for Tokyo, during the Sino-Japanese conflict. (Photo by Keystone/Getty Images)

circa 1937: Japanese troops guarding the fortress of Mukden in Manchuria during the Sino-Japanese conflict. (Photo by Fox Photos/Getty Images)

1937 photo on display at the Museum of the War of Resistance Against Japan shows Japanese Imperial Army soldiers about to behead a Chinese man in Nanjing during their occuption of the city. (Photo ROBYN BECK/AFP/Getty Images)

The American light cruiser USS Phoenix passing the burning USS West Virginia and USS Arizona, during the Japanese attack on Pearl Harbor, 7TH December 1941. (Photo by Hulton Archive/Getty Images)