They included a "monthly report on military police" and "report on restoring public order in area around Nanjing".

The documents were written by the Imperial Japanese Army during its war of aggression against China.

The sexual slavery is, indeed, a state-sponsored crime, not the service made by women of their own accord as claimed by the Japanese reactionaries.

In the first half of the 20th century, the Japanese imperialists enforced the sexual slavery allegedly to raise combat morale of the aggression forces.

Accordingly, they defined sexual slavery as one of important military affairs and even set up the desk for it.

The Japanese Ministry of Foreign Affairs and consulates in China were also directly involved in it, with the government-general in Korea playing a key role in delivery and transportation of sexual slaves.

The Japanese imperialists mobilized gendarme, police and soldiers to abduct women, irrespective of young girls and married women, in Korea, China and other Asian countries, reducing them to sexual slaves.

About 200 000 Korean women were forced to become sexual slaves, with most of them killed ruthlessly.

The newly-discovered documents irrefutably testify to it.

Japan must make an apology and reparation for the sexual slavery in the light of international laws and human morality.