Emperor
The title of Japan's head of state. An emperor's reign title is assigned posthumously. The 'emperor' title was first used in the early period of Nara Era [AD 710~784]. According to the Japanese legend of national foundation, the imperial family of Japan was first established by the legendary Emperor Jinmu, who was a direct descendant of the sun goddess, Amaterasu Omikami, in BC 660. About the 3rd century AD, the imperial family established dominance over the central and the western regions of Japan. And the imperial family tradition has continued for some 2,000 years. However, during the period from the 12th century to the 19th century all powers of the emperor were in the hands of nobles and the samurai. In 1868 leaders of the Meiji Restoration proclaimed that the direct rule by emperor must be restored and unified Japan as a centrally governed nation with the emperor as the symbol for national unification. Although the emperor was not given the responsibility of actual governance, loyalty to the emperor was regarded as a sacred obligation and patriotic responsibility. In 1945, as Japan lost World War II, the national Shinto system was dissolved and Emperor Hirohito denied his divine status on the following New Year's Day in the so-called 'Ningen Shengen (human declaration).' The post-war Japanese constitution defined the emperor as only a symbol for national unification and specified imperial succession and national events of emperor's participation. Thus, Emperor of Japan became a nominal being without any political powers.

Manchuria Incident
The war that broke out from Japan's invasion of Manchuria triggered by Liutiaohu Incident on September 18, 1931, which was devised and executed by the Japanese Kwantung Army for the purpose of occupying Manchuria (current Dungbei region of China). Lately there is a movement within China to change the title of the conflict to 'Manchurian War.' The Japanese Kwantung Army had been scheming to occupy Manchuria. To create a pretext for the purported aggression, they exploded the Manchurian Railway line near Liutiaohu outside of Shenyang and blamed it on the Chinese side. Subsequently they initiated military actions over the entire northern Manchuria from the Manchurian Railway line.? By early 1932 the Japanese Army occupied almost all of Manchuria. On March 1 of the year announced the foundation of 'Manchukuo,' which was a puppet government of Japan, thus turning Manchuria as an important logistic base for Japan's military aggression against China. Based on the Chinese accusation, the League of Nations dispa tched an investigative commission headed by Earl Lytton of Britain, adopted its report and advised Japan to withdraw from Manchuria. Having already annexed Rehe area, Japan refused to follow the mandate and left the League of Nations in March 1933. Subsequently, the Japanese Government terminated the political party based cabinet system and shifted to a fascist national structure. And the Japanese aggression progressed to the Second Sino-Japanese War of 1937 and the Pacific War of 1941.

The Second Sino-Japanese War
The war in China which was initiated by the Japanese invasion in July 1937 and spread to entire China. This war was triggered by the Lugouqiao Incident outside of Beijing on July 7, 1937. Subsequent to the incident, Japan occupied Bejing and Tienjin, expanded the war sphere to Shanghai, occupied Nanjing, which was the capital of the Kuomintang government in December 1937, where the Japanese Army massacred hundreds of thousands of civilians. Afterwards the Japanese Army attacked Wuhan and occupied most of ten provinces from Guangdong to Shanxi and most major cities within them. all farming households. The exaction scope was expanded to include some 40 products such as barley, cotton, hemp and fernbrake. The Korean people of this period also perceived 'people' as objects of public exaction in the same manner so that forcible taking of young women from their homes by the Colonial Government was commonly referred as 'cheonyeo gongchul (virgin exaction)'.

The Pacific War (1941-1945)
On December 7, 1941 Japanese aircraft and submarines attacked the U.S. Pacific Fleet forces which were moored in areas of Pearl Harbor, Hawaii. This attack immediately prompted the U.S. to enter the World War II as a member of the allied forces. As a result of this attack, 8 battleships and 13 other naval vessels sank while 188 aircraft were destroyed and thousands of people were killed or wounded. Pearl Harbor has become a national historical site and a memorial was established on the sunken battleship USS Arizona. Also, USS Missouri, on which Japan signed the surrender document in 1945, is being preserved as a memorial site.

Nanjing Occupation/ Nanjing Massacre
From December 1937 to January 1938 Japanese Army massacred Chinese prisoners and civilians in and around the then China's capital, Nanjing, during the Second Sino-Japanese War. As some 90,000 Japanese forces surrounded Nanjing for attack, Jiang Jeshi, then China's president, fled to Chungking with his cabinet five days before the fall of the city. The Japanese Army killed about 300,000 people during this attack and about 42,000 more upon? occupying Nanjing. According to the data submitted to the International Military Tribunal of the Far East upon termination of World War II, the number of discarded corpses in Nanjing which were buried by two charity organizations alone was 155,337. Many more were thrown into Yangtze River. General Matsui, the Japanese Army commander, was executed as the responsible person for this atrocity. Also executed were Hase Hisao, commander of the Sixth Division, and numerous other military leaders for their war crimes as sentenced by the Nanjing Court.

Public Prostitution System
This system allows adults to engage in sexual transactions of their own free will without penalty in designated areas. This system was first instituted in France and spread to other European nations. It was introduced into Japan in mid-19th century. During Joseon era of Korea there was no public prostitution other than the official gisaeng system. However, in March 1916 then Japanese Governor General of Korea, Terauchi, promulgated the brothel system of Tokugawa era as the public prostitution system in Korea. Based on this edict gisaengs had to be registered at a 'gwonbeon (gisaeng house)' and pay taxes. Gwonbeons taught student gisaengs songs and dancing to produce qualified gisaengs and acted as the control center for managing their activities in saloons and handling their charges. In Seoul there were Hanseong Gwonbeon, Daedong Gwonbeon, Hannam Gwonbeon and Joseon Gwonbeon while Giseong Gwonbeon was in Pyeongyang. There were also gwonbeons in Busan, Daegu, Hamheung and Jinju. Required training courses yo ung gisaengs had to take included Korean music, dancing, traditional manners and the Japanese language. Gwonbeons were disbanded based on Law No. 7 of the Transition Government on October 14, 1947, which abolished the public prostitution system.

Public Exaction (Gongchul)
Forcible taking by the imperialist Japanese government of civilian materials and food items for their war effort since 1939. Initially the public exaction system was conducted to improve the production spirit of people. But as the financial and food supply situations degraded as the war dragged on, the Japanese colonial government announced 'Joseon Foodstuff Control Edict' in 1942 to forcibly take away all rice and other grain harvests except the amount required for household consumption from all farming households. The exaction scope was expanded to include some 40 products such as barley, cotton, hemp and fernbrake. The Korean people of this period also perceived 'people' as objects of public exaction in the same manner so that forcible taking of young women from their homes by the Colonial Government was commonly referred as 'cheonyeo gongchul (virgin exaction)'.

Japanese Colonial Government
The colonial government of Japan in Korea that ruled and plundered the Korean Peninsula for 36 years from 1910 when Joseon lost independence to the nation's liberation in 1945. On September 30, 1910 the organization of the Colonial Government and associated agencies was promulgated and the Colonial Government began functioning from the next day. The governor general who was placed in charge of the Colonial Government as the highest ruling authority of Korea was chosen from four star generals and admirals of Japan and was given full authorities of administration, legislation and military. During the final stage of their colonial rule, the Colonial Government implemented the policies of obliterating traditions, customs and even the language of Korea under the slogans of 'integration of Korea to Japan,' 'Japanese name adoption,' and 'transformation into imperial citizenry.' Japanese Colonial Government was disbanded on August 15, 1945 when Japan surrendered to the Allies.

Labor Bogukdae
The labor organization that the imperialist Japan utilized by forcibly mobilizing Koreans since the Second Sino-Japanese War to exploit their labor. Imperialist Japan announced 'Citizens' Labor Contribution Edict' in 1941. Based on this edict they forcibly took Koreans and formed numerous labor Bogukdae units, which were used to construct roads, railways, air fields and shrines. Some were dispatched to military facilities. Various organizations were created at different levels including Work Place Bogukdae; Student Bogukdae consisting of senior classes of elementary schools and high schools; South Asia Dispatch Bogukdae consisting of prisoners; and Farmers Bogukdae consisting of farmers. The last was organized mostly of those who were excluded from other forced labor mobilization. Bogukdae units were exploited under poor working conditions with no definite service period. Some 7.62 million Koreans were forcibly mobilized into various Bogukdae units from 1938 to 1944.

Full Mobilization Structure
Imperialist Japan promulgated the 'Law for National Full Mobilization' and the 'Law for Military Industry Full Mobilization' in 1938. They organized Joseon Federation in 1938 and the National Full Force Federation in 1940 to mobilize resources of Korea over the entire peninsula to support Japan's war efforts of China invasion.

Public Prostitution System
This system allows adults to engage in sexual transactions of their own free will without penalty in designated areas. This system was first instituted in France and spread to other European nations. It was introduced into Japan in mid-19th century. During Joseon era of Korea there was no public prostitution other than the official gisaeng system. However, in March 1916 then Japanese Governor General of Korea, Terauchi, promulgated the brothel system of Tokugawa era as the public prostitution system in Korea. Based on this edict gisaengs had to be registered at a 'gwonbeon (gisaeng house)' and pay taxes. Gwonbeons taught student gisaengs songs and dancing to produce qualified gisaengs and acted as the control center for managing their activities in saloons and handling their charges. In Seoul there were Hanseong Gwonbeon, Daedong Gwonbeon, Hannam Gwonbeon and Joseon Gwonbeon while Giseong Gwonbeon was in Pyeongyang. There were also gwonbeons in Busan, Daegu, Hamheung and Jinju. Required training courses young gisaengs had to take included Korean music, dancing, traditional manners and the Japanese language. Gwonbeons were disbanded based on Law No. 7 of the Transition Government on October 14, 1947, which abolished the public prostitution system.

Venereal Disease Checkup
Japanese Military conducted routine venereal disease checkups of comfort women not for their health but to prevent such diseases in their military personnel for fear of degrading their effectiveness. The number of venereal disease patients among 72,000 soldiers during the Siberian campaign of the Russo-Japanese War of 1918~1922 reached 2,012 and the total number including those of light symptoms could have been five to six times this number.

Military Checks
Special checks, called military checks, issued by the government or the military as payments for items needed by the military during a war in a foreign land or when the military is stationed overseas. The currency unit used on these military checks was either the home country currency unit or that of the local country. Occupation forces had the authority to mobilize resources in the occupied land and hence could use the home country's currency for their payments. However, military checks were normally used for reasons of the difference in currency basis, impact on the home country's economy from massive outflows of home currency to other countries and the need for preventing counterfeit money. (See photograph.).

No. 606 Injection (Salvarsan Injection)
The world's first chemical treatment drug sometimes called arsphenamine or arsenobenzone. It is called No. 606 because P. Erlich succeeded in synthesizing it in the 606th trial. It was used as the cure for syphilis, rat-bite fever, Weil disease and recurrent fever. However, it is no longer used because of its serious side effects. Erlich sought to find a medicine that will not damage human cells but destroy only the germs in human body. He repeated trials and errors over 600 times and, in 1910, finally succeeded in discovering the arsenic compound, 'Salvarsan 606,' which turned out to be highly effective against syphilis. Salvarsan meant 'arsenic that saves the world.' Salvarsan 606 was used widely as a wonder drug for four decades until penicillin became available. From today's viewpoint, salvarsan is not a great medicine. However, compared to mercury which had been used for syphilis treatment before this, it had clear efficacy with less toxicity and side effects and thus saved many syphilis patients. It also proved the fact that a synthesized chemical compound could be used effectively as a drug.

Shakku
Condom used by the Japanese Military during World War II. Shakku was manufactured by Okamoto Co. and was labeled as 'Attack No. 1.' Japanese Army and Navy purchased them centrally and distributed them to front line units and comfort stations. This shows how serious the Japanese Military was towards venereal disease prevention. Condoms of the time were sometimes torn during their use and supply problems were frequent so that shakkus were washed and recycled often.

Trauma
Post Traumatic Stress Disorder. This refers to the mental handicap that persists for over a month after being exposed to a physical injury or a life threatening situation. Trauma often occurs from experiences of a war, natural disaster, fire, physical violence, rape, and accident involving an automobile, airplane or train. In summary, trauma is a mental disorder that occurs upon exposure to a physical or mental shock. Symptoms of a trauma can be categorized as hyper sensitivity, recurrence of shock, mental evasion and stupor. Patients of hyper sensitivity are always ill at ease, fearful of surroundings and suffer from insomnia. Patients of recurring shock experience the memory, dream or illusion of the relevant event at the same level of intensity. Patients of mental evasion or stupor try to avoid the feeling, thought and situation of the shock event and in the process lose normal emotional response. Most of the patients' emotions are unrealistic and they often feel degradation, anger, feeling of victimization and sense of shame. Because of these problems they could fall into alcoholism, drug abuse, self injury, suicide, professional incompetence and inter-personal relationship deficiency. The patients are often unstable emotionally, suffer from clear dysautonomia symptoms or experience illusions or hallucinations. Accompanying complications can include dissociation or panic seizures.